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Finding the Fourth Proportional to 181,781.40, 250,793.40 and 105,258.72

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Solution

The fourth proportional to 181,781.40, 250,793.40 and 105,258.72 is: 145,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,781.40 : 250,793.40 = 105,258.72 : x
  2. Step 2: Convert to fraction form
    181,781.40/250,793.40 = 105,258.72/x
  3. Step 3: Cross multiply
    181,781.40x = 250,793.40 × 105,258.72
  4. Step 4: Simplify right side
    181,781.40x = 26,398,192,268.45
  5. Step 5: Solve for x
    x = 26,398,192,268.45/181,781.40
  6. Step 6: Final answer
    x = 145,219.44

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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.