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Finding the Fourth Proportional to 74,902.52, 103,189.65 and 52,200.20

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Solution

The fourth proportional to 74,902.52, 103,189.65 and 52,200.20 is: 71,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,902.52 : 103,189.65 = 52,200.20 : x
  2. Step 2: Convert to fraction form
    74,902.52/103,189.65 = 52,200.20/x
  3. Step 3: Cross multiply
    74,902.52x = 103,189.65 × 52,200.20
  4. Step 4: Simplify right side
    74,902.52x = 5,386,520,367.93
  5. Step 5: Solve for x
    x = 5,386,520,367.93/74,902.52
  6. Step 6: Final answer
    x = 71,913.74

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1.5x scale

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.