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Finding the Fourth Proportional to 113,397.66, 156,491.19 and 63,099.90

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Solution

The fourth proportional to 113,397.66, 156,491.19 and 63,099.90 is: 87,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,397.66 : 156,491.19 = 63,099.90 : x
  2. Step 2: Convert to fraction form
    113,397.66/156,491.19 = 63,099.90/x
  3. Step 3: Cross multiply
    113,397.66x = 156,491.19 × 63,099.90
  4. Step 4: Simplify right side
    113,397.66x = 9,874,578,439.88
  5. Step 5: Solve for x
    x = 9,874,578,439.88/113,397.66
  6. Step 6: Final answer
    x = 87,079.21

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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.