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Finding the Fourth Proportional to 108,449.98, 162,780 and 52,329.55

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Solution

The fourth proportional to 108,449.98, 162,780 and 52,329.55 is: 78,545.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,449.98 : 162,780 = 52,329.55 : x
  2. Step 2: Convert to fraction form
    108,449.98/162,780 = 52,329.55/x
  3. Step 3: Cross multiply
    108,449.98x = 162,780 × 52,329.55
  4. Step 4: Simplify right side
    108,449.98x = 8,518,204,149
  5. Step 5: Solve for x
    x = 8,518,204,149/108,449.98
  6. Step 6: Final answer
    x = 78,545.00

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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.