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Finding the Fourth Proportional to 181,781.70, 250,902.92 and 105,288.46

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Solution

The fourth proportional to 181,781.70, 250,902.92 and 105,288.46 is: 145,323.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,781.70 : 250,902.92 = 105,288.46 : x
  2. Step 2: Convert to fraction form
    181,781.70/250,902.92 = 105,288.46/x
  3. Step 3: Cross multiply
    181,781.70x = 250,902.92 × 105,288.46
  4. Step 4: Simplify right side
    181,781.70x = 26,417,182,056.30
  5. Step 5: Solve for x
    x = 26,417,182,056.30/181,781.70
  6. Step 6: Final answer
    x = 145,323.66

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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.