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Finding the Fourth Proportional to 118,659.90, 177,892.35 and 55,448.79

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Solution

The fourth proportional to 118,659.90, 177,892.35 and 55,448.79 is: 83,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,659.90 : 177,892.35 = 55,448.79 : x
  2. Step 2: Convert to fraction form
    118,659.90/177,892.35 = 55,448.79/x
  3. Step 3: Cross multiply
    118,659.90x = 177,892.35 × 55,448.79
  4. Step 4: Simplify right side
    118,659.90x = 9,863,915,557.76
  5. Step 5: Solve for x
    x = 9,863,915,557.76/118,659.90
  6. Step 6: Final answer
    x = 83,127.62

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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.