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Finding the Fourth Proportional to 170,887.68, 235,789.02 and 99,230.76

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Solution

The fourth proportional to 170,887.68, 235,789.02 and 99,230.76 is: 136,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,887.68 : 235,789.02 = 99,230.76 : x
  2. Step 2: Convert to fraction form
    170,887.68/235,789.02 = 99,230.76/x
  3. Step 3: Cross multiply
    170,887.68x = 235,789.02 × 99,230.76
  4. Step 4: Simplify right side
    170,887.68x = 23,397,523,654.26
  5. Step 5: Solve for x
    x = 23,397,523,654.26/170,887.68
  6. Step 6: Final answer
    x = 136,917.56

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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.