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Finding the Fourth Proportional to 113,555.52, 156,725.28 and 63,270.72

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Solution

The fourth proportional to 113,555.52, 156,725.28 and 63,270.72 is: 87,323.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,555.52 : 156,725.28 = 63,270.72 : x
  2. Step 2: Convert to fraction form
    113,555.52/156,725.28 = 63,270.72/x
  3. Step 3: Cross multiply
    113,555.52x = 156,725.28 × 63,270.72
  4. Step 4: Simplify right side
    113,555.52x = 9,916,121,307.80
  5. Step 5: Solve for x
    x = 9,916,121,307.80/113,555.52
  6. Step 6: Final answer
    x = 87,323.99

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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.