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Finding the Fourth Proportional to 396,126.64, 546,724.64 and 235,070.52

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Solution

The fourth proportional to 396,126.64, 546,724.64 and 235,070.52 is: 324,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,126.64 : 546,724.64 = 235,070.52 : x
  2. Step 2: Convert to fraction form
    396,126.64/546,724.64 = 235,070.52/x
  3. Step 3: Cross multiply
    396,126.64x = 546,724.64 × 235,070.52
  4. Step 4: Simplify right side
    396,126.64x = 128,518,845,421.61
  5. Step 5: Solve for x
    x = 128,518,845,421.61/396,126.64
  6. Step 6: Final answer
    x = 324,438.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.