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Finding the Fourth Proportional to 591,658.67, 887,487.95 and 142,379.58

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Solution

The fourth proportional to 591,658.67, 887,487.95 and 142,379.58 is: 213,569.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,658.67 : 887,487.95 = 142,379.58 : x
  2. Step 2: Convert to fraction form
    591,658.67/887,487.95 = 142,379.58/x
  3. Step 3: Cross multiply
    591,658.67x = 887,487.95 × 142,379.58
  4. Step 4: Simplify right side
    591,658.67x = 126,360,160,864.16
  5. Step 5: Solve for x
    x = 126,360,160,864.16/591,658.67
  6. Step 6: Final answer
    x = 213,569.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.