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Finding the Fourth Proportional to 52,761.97, 72,811.51 and 28,888.64

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Solution

The fourth proportional to 52,761.97, 72,811.51 and 28,888.64 is: 39,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,761.97 : 72,811.51 = 28,888.64 : x
  2. Step 2: Convert to fraction form
    52,761.97/72,811.51 = 28,888.64/x
  3. Step 3: Cross multiply
    52,761.97x = 72,811.51 × 28,888.64
  4. Step 4: Simplify right side
    52,761.97x = 2,103,425,337.01
  5. Step 5: Solve for x
    x = 2,103,425,337.01/52,761.97
  6. Step 6: Final answer
    x = 39,866.31

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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.