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Finding the Fourth Proportional to 181,990.32, 272,800.71 and 69,641.70

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Solution

The fourth proportional to 181,990.32, 272,800.71 and 69,641.70 is: 104,391.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,990.32 : 272,800.71 = 69,641.70 : x
  2. Step 2: Convert to fraction form
    181,990.32/272,800.71 = 69,641.70/x
  3. Step 3: Cross multiply
    181,990.32x = 272,800.71 × 69,641.70
  4. Step 4: Simplify right side
    181,990.32x = 18,998,305,205.61
  5. Step 5: Solve for x
    x = 18,998,305,205.61/181,990.32
  6. Step 6: Final answer
    x = 104,391.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.