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Finding the Fourth Proportional to 108,671.52, 162,975.68 and 42,096.80

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Solution

The fourth proportional to 108,671.52, 162,975.68 and 42,096.80 is: 63,132.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,671.52 : 162,975.68 = 42,096.80 : x
  2. Step 2: Convert to fraction form
    108,671.52/162,975.68 = 42,096.80/x
  3. Step 3: Cross multiply
    108,671.52x = 162,975.68 × 42,096.80
  4. Step 4: Simplify right side
    108,671.52x = 6,860,754,605.82
  5. Step 5: Solve for x
    x = 6,860,754,605.82/108,671.52
  6. Step 6: Final answer
    x = 63,132.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.