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Finding the Fourth Proportional to 113,664.90, 156,866.90 and 62,687.60

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Solution

The fourth proportional to 113,664.90, 156,866.90 and 62,687.60 is: 86,514.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,664.90 : 156,866.90 = 62,687.60 : x
  2. Step 2: Convert to fraction form
    113,664.90/156,866.90 = 62,687.60/x
  3. Step 3: Cross multiply
    113,664.90x = 156,866.90 × 62,687.60
  4. Step 4: Simplify right side
    113,664.90x = 9,833,609,754.88
  5. Step 5: Solve for x
    x = 9,833,609,754.88/113,664.90
  6. Step 6: Final answer
    x = 86,514.04

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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.