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Finding the Fourth Proportional to 113,222, 156,252.84 and 62,937.20

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Solution

The fourth proportional to 113,222, 156,252.84 and 62,937.20 is: 86,856.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,222 : 156,252.84 = 62,937.20 : x
  2. Step 2: Convert to fraction form
    113,222/156,252.84 = 62,937.20/x
  3. Step 3: Cross multiply
    113,222x = 156,252.84 × 62,937.20
  4. Step 4: Simplify right side
    113,222x = 9,834,116,241.65
  5. Step 5: Solve for x
    x = 9,834,116,241.65/113,222
  6. Step 6: Final answer
    x = 86,856.94

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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.