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Finding the Fourth Proportional to 14,692.76, 20,276.14 and 8,641.38

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Solution

The fourth proportional to 14,692.76, 20,276.14 and 8,641.38 is: 11,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,692.76 : 20,276.14 = 8,641.38 : x
  2. Step 2: Convert to fraction form
    14,692.76/20,276.14 = 8,641.38/x
  3. Step 3: Cross multiply
    14,692.76x = 20,276.14 × 8,641.38
  4. Step 4: Simplify right side
    14,692.76x = 175,213,901.31
  5. Step 5: Solve for x
    x = 175,213,901.31/14,692.76
  6. Step 6: Final answer
    x = 11,925.19

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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.