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Finding the Fourth Proportional to 96,918.40, 133,658.40 and 62,891.20

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Solution

The fourth proportional to 96,918.40, 133,658.40 and 62,891.20 is: 86,732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,918.40 : 133,658.40 = 62,891.20 : x
  2. Step 2: Convert to fraction form
    96,918.40/133,658.40 = 62,891.20/x
  3. Step 3: Cross multiply
    96,918.40x = 133,658.40 × 62,891.20
  4. Step 4: Simplify right side
    96,918.40x = 8,405,937,166.08
  5. Step 5: Solve for x
    x = 8,405,937,166.08/96,918.40
  6. Step 6: Final answer
    x = 86,732.11

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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.