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Finding the Fourth Proportional to 61,658.70, 92,358.45 and 51,290.70

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Solution

The fourth proportional to 61,658.70, 92,358.45 and 51,290.70 is: 76,828.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,658.70 : 92,358.45 = 51,290.70 : x
  2. Step 2: Convert to fraction form
    61,658.70/92,358.45 = 51,290.70/x
  3. Step 3: Cross multiply
    61,658.70x = 92,358.45 × 51,290.70
  4. Step 4: Simplify right side
    61,658.70x = 4,737,129,551.42
  5. Step 5: Solve for x
    x = 4,737,129,551.42/61,658.70
  6. Step 6: Final answer
    x = 76,828.24

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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.