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Finding the Fourth Proportional to 19,998.76, 27,598.70 and 12,039.29

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Solution

The fourth proportional to 19,998.76, 27,598.70 and 12,039.29 is: 16,614.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,998.76 : 27,598.70 = 12,039.29 : x
  2. Step 2: Convert to fraction form
    19,998.76/27,598.70 = 12,039.29/x
  3. Step 3: Cross multiply
    19,998.76x = 27,598.70 × 12,039.29
  4. Step 4: Simplify right side
    19,998.76x = 332,268,692.73
  5. Step 5: Solve for x
    x = 332,268,692.73/19,998.76
  6. Step 6: Final answer
    x = 16,614.47

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Find fourth proportional to 9,999.38, 13,799.35 and 6,019.65
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.