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Finding the Fourth Proportional to 118,379.52, 177,724.80 and 83,335.68

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Solution

The fourth proportional to 118,379.52, 177,724.80 and 83,335.68 is: 125,113.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,379.52 : 177,724.80 = 83,335.68 : x
  2. Step 2: Convert to fraction form
    118,379.52/177,724.80 = 83,335.68/x
  3. Step 3: Cross multiply
    118,379.52x = 177,724.80 × 83,335.68
  4. Step 4: Simplify right side
    118,379.52x = 14,810,817,060.86
  5. Step 5: Solve for x
    x = 14,810,817,060.86/118,379.52
  6. Step 6: Final answer
    x = 125,113.00

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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.