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Finding the Fourth Proportional to 124,499.60, 171,809.62 and 67,911.92

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Solution

The fourth proportional to 124,499.60, 171,809.62 and 67,911.92 is: 93,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,499.60 : 171,809.62 = 67,911.92 : x
  2. Step 2: Convert to fraction form
    124,499.60/171,809.62 = 67,911.92/x
  3. Step 3: Cross multiply
    124,499.60x = 171,809.62 × 67,911.92
  4. Step 4: Simplify right side
    124,499.60x = 11,667,921,168.67
  5. Step 5: Solve for x
    x = 11,667,921,168.67/124,499.60
  6. Step 6: Final answer
    x = 93,718.54

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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.