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Finding the Fourth Proportional to 363,587.48, 545,630.33 and 126,930.15

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Solution

The fourth proportional to 363,587.48, 545,630.33 and 126,930.15 is: 190,482.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,587.48 : 545,630.33 = 126,930.15 : x
  2. Step 2: Convert to fraction form
    363,587.48/545,630.33 = 126,930.15/x
  3. Step 3: Cross multiply
    363,587.48x = 545,630.33 × 126,930.15
  4. Step 4: Simplify right side
    363,587.48x = 69,256,938,996.80
  5. Step 5: Solve for x
    x = 69,256,938,996.80/363,587.48
  6. Step 6: Final answer
    x = 190,482.19

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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.