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Finding the Fourth Proportional to 128,599.60, 193,023.90 and 62,086.40

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Solution

The fourth proportional to 128,599.60, 193,023.90 and 62,086.40 is: 93,189.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,599.60 : 193,023.90 = 62,086.40 : x
  2. Step 2: Convert to fraction form
    128,599.60/193,023.90 = 62,086.40/x
  3. Step 3: Cross multiply
    128,599.60x = 193,023.90 × 62,086.40
  4. Step 4: Simplify right side
    128,599.60x = 11,984,159,064.96
  5. Step 5: Solve for x
    x = 11,984,159,064.96/128,599.60
  6. Step 6: Final answer
    x = 93,189.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.