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Finding the Fourth Proportional to 692,787.72, 956,587.68 and 531,387.12

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Solution

The fourth proportional to 692,787.72, 956,587.68 and 531,387.12 is: 733,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,787.72 : 956,587.68 = 531,387.12 : x
  2. Step 2: Convert to fraction form
    692,787.72/956,587.68 = 531,387.12/x
  3. Step 3: Cross multiply
    692,787.72x = 956,587.68 × 531,387.12
  4. Step 4: Simplify right side
    692,787.72x = 508,318,372,302.68
  5. Step 5: Solve for x
    x = 508,318,372,302.68/692,787.72
  6. Step 6: Final answer
    x = 733,728.90

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Double scale
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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.