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Finding the Fourth Proportional to 686,877.98, 947,948.32 and 381,052.86

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Solution

The fourth proportional to 686,877.98, 947,948.32 and 381,052.86 is: 525,884.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,877.98 : 947,948.32 = 381,052.86 : x
  2. Step 2: Convert to fraction form
    686,877.98/947,948.32 = 381,052.86/x
  3. Step 3: Cross multiply
    686,877.98x = 947,948.32 × 381,052.86
  4. Step 4: Simplify right side
    686,877.98x = 361,218,413,246.28
  5. Step 5: Solve for x
    x = 361,218,413,246.28/686,877.98
  6. Step 6: Final answer
    x = 525,884.40

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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.