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Finding the Fourth Proportional to 61,957.35, 85,306.91 and 54,681.93

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Solution

The fourth proportional to 61,957.35, 85,306.91 and 54,681.93 is: 75,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,957.35 : 85,306.91 = 54,681.93 : x
  2. Step 2: Convert to fraction form
    61,957.35/85,306.91 = 54,681.93/x
  3. Step 3: Cross multiply
    61,957.35x = 85,306.91 × 54,681.93
  4. Step 4: Simplify right side
    61,957.35x = 4,664,746,207.73
  5. Step 5: Solve for x
    x = 4,664,746,207.73/61,957.35
  6. Step 6: Final answer
    x = 75,289.63

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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.