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Finding the Fourth Proportional to 144,886.20, 217,070.10 and 118,447.80

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Solution

The fourth proportional to 144,886.20, 217,070.10 and 118,447.80 is: 177,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,886.20 : 217,070.10 = 118,447.80 : x
  2. Step 2: Convert to fraction form
    144,886.20/217,070.10 = 118,447.80/x
  3. Step 3: Cross multiply
    144,886.20x = 217,070.10 × 118,447.80
  4. Step 4: Simplify right side
    144,886.20x = 25,711,475,790.78
  5. Step 5: Solve for x
    x = 25,711,475,790.78/144,886.20
  6. Step 6: Final answer
    x = 177,459.80

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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.