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Finding the Fourth Proportional to 99,626.50, 137,483.68 and 54,304.48

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Solution

The fourth proportional to 99,626.50, 137,483.68 and 54,304.48 is: 74,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,626.50 : 137,483.68 = 54,304.48 : x
  2. Step 2: Convert to fraction form
    99,626.50/137,483.68 = 54,304.48/x
  3. Step 3: Cross multiply
    99,626.50x = 137,483.68 × 54,304.48
  4. Step 4: Simplify right side
    99,626.50x = 7,465,979,750.89
  5. Step 5: Solve for x
    x = 7,465,979,750.89/99,626.50
  6. Step 6: Final answer
    x = 74,939.70

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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.