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Finding the Fourth Proportional to 159,820.81, 220,551.70 and 88,200.83

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Solution

The fourth proportional to 159,820.81, 220,551.70 and 88,200.83 is: 121,716.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,820.81 : 220,551.70 = 88,200.83 : x
  2. Step 2: Convert to fraction form
    159,820.81/220,551.70 = 88,200.83/x
  3. Step 3: Cross multiply
    159,820.81x = 220,551.70 × 88,200.83
  4. Step 4: Simplify right side
    159,820.81x = 19,452,842,997.91
  5. Step 5: Solve for x
    x = 19,452,842,997.91/159,820.81
  6. Step 6: Final answer
    x = 121,716.58

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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.