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Finding the Fourth Proportional to 72,672.97, 100,226.25 and 47,154.19

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Solution

The fourth proportional to 72,672.97, 100,226.25 and 47,154.19 is: 65,032.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,672.97 : 100,226.25 = 47,154.19 : x
  2. Step 2: Convert to fraction form
    72,672.97/100,226.25 = 47,154.19/x
  3. Step 3: Cross multiply
    72,672.97x = 100,226.25 × 47,154.19
  4. Step 4: Simplify right side
    72,672.97x = 4,726,087,635.49
  5. Step 5: Solve for x
    x = 4,726,087,635.49/72,672.97
  6. Step 6: Final answer
    x = 65,032.26

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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.