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Finding the Fourth Proportional to 52,540.71, 72,505.42 and 28,666.90

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Solution

The fourth proportional to 52,540.71, 72,505.42 and 28,666.90 is: 39,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,540.71 : 72,505.42 = 28,666.90 : x
  2. Step 2: Convert to fraction form
    52,540.71/72,505.42 = 28,666.90/x
  3. Step 3: Cross multiply
    52,540.71x = 72,505.42 × 28,666.90
  4. Step 4: Simplify right side
    52,540.71x = 2,078,505,624.60
  5. Step 5: Solve for x
    x = 2,078,505,624.60/52,540.71
  6. Step 6: Final answer
    x = 39,559.91

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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.