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Finding the Fourth Proportional to 292,528.80, 438,793.20 and 159,668.55

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Solution

The fourth proportional to 292,528.80, 438,793.20 and 159,668.55 is: 239,502.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,528.80 : 438,793.20 = 159,668.55 : x
  2. Step 2: Convert to fraction form
    292,528.80/438,793.20 = 159,668.55/x
  3. Step 3: Cross multiply
    292,528.80x = 438,793.20 × 159,668.55
  4. Step 4: Simplify right side
    292,528.80x = 70,061,473,993.86
  5. Step 5: Solve for x
    x = 70,061,473,993.86/292,528.80
  6. Step 6: Final answer
    x = 239,502.83

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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.