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Finding the Fourth Proportional to 158,189.54, 218,301.21 and 86,569.52

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Solution

The fourth proportional to 158,189.54, 218,301.21 and 86,569.52 is: 119,465.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,189.54 : 218,301.21 = 86,569.52 : x
  2. Step 2: Convert to fraction form
    158,189.54/218,301.21 = 86,569.52/x
  3. Step 3: Cross multiply
    158,189.54x = 218,301.21 × 86,569.52
  4. Step 4: Simplify right side
    158,189.54x = 18,898,229,873.61
  5. Step 5: Solve for x
    x = 18,898,229,873.61/158,189.54
  6. Step 6: Final answer
    x = 119,465.74

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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.