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Finding the Fourth Proportional to 13,984.76, 19,298.96 and 8,395.76

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Solution

The fourth proportional to 13,984.76, 19,298.96 and 8,395.76 is: 11,586.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.76 : 19,298.96 = 8,395.76 : x
  2. Step 2: Convert to fraction form
    13,984.76/19,298.96 = 8,395.76/x
  3. Step 3: Cross multiply
    13,984.76x = 19,298.96 × 8,395.76
  4. Step 4: Simplify right side
    13,984.76x = 162,029,436.41
  5. Step 5: Solve for x
    x = 162,029,436.41/13,984.76
  6. Step 6: Final answer
    x = 11,586.14

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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.