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Finding the Fourth Proportional to 292,366.43, 438,724.60 and 126,154.43

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Solution

The fourth proportional to 292,366.43, 438,724.60 and 126,154.43 is: 189,307.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,366.43 : 438,724.60 = 126,154.43 : x
  2. Step 2: Convert to fraction form
    292,366.43/438,724.60 = 126,154.43/x
  3. Step 3: Cross multiply
    292,366.43x = 438,724.60 × 126,154.43
  4. Step 4: Simplify right side
    292,366.43x = 55,347,050,743.17
  5. Step 5: Solve for x
    x = 55,347,050,743.17/292,366.43
  6. Step 6: Final answer
    x = 189,307.13

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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.