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Finding the Fourth Proportional to 8,935.74, 12,331.85 and 4,957.29

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Solution

The fourth proportional to 8,935.74, 12,331.85 and 4,957.29 is: 6,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,935.74 : 12,331.85 = 4,957.29 : x
  2. Step 2: Convert to fraction form
    8,935.74/12,331.85 = 4,957.29/x
  3. Step 3: Cross multiply
    8,935.74x = 12,331.85 × 4,957.29
  4. Step 4: Simplify right side
    8,935.74x = 61,132,531.90
  5. Step 5: Solve for x
    x = 61,132,531.90/8,935.74
  6. Step 6: Final answer
    x = 6,841.35

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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.