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Finding the Fourth Proportional to 113,607.74, 156,771.61 and 62,620.88

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Solution

The fourth proportional to 113,607.74, 156,771.61 and 62,620.88 is: 86,412.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,607.74 : 156,771.61 = 62,620.88 : x
  2. Step 2: Convert to fraction form
    113,607.74/156,771.61 = 62,620.88/x
  3. Step 3: Cross multiply
    113,607.74x = 156,771.61 × 62,620.88
  4. Step 4: Simplify right side
    113,607.74x = 9,817,175,236.81
  5. Step 5: Solve for x
    x = 9,817,175,236.81/113,607.74
  6. Step 6: Final answer
    x = 86,412.91

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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.