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Finding the Fourth Proportional to 91,134.90, 125,622.94 and 62,404.90

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Solution

The fourth proportional to 91,134.90, 125,622.94 and 62,404.90 is: 86,020.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,134.90 : 125,622.94 = 62,404.90 : x
  2. Step 2: Convert to fraction form
    91,134.90/125,622.94 = 62,404.90/x
  3. Step 3: Cross multiply
    91,134.90x = 125,622.94 × 62,404.90
  4. Step 4: Simplify right side
    91,134.90x = 7,839,487,008.41
  5. Step 5: Solve for x
    x = 7,839,487,008.41/91,134.90
  6. Step 6: Final answer
    x = 86,020.69

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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.