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Finding the Fourth Proportional to 443,691.64, 612,294.45 and 242,487.64

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Solution

The fourth proportional to 443,691.64, 612,294.45 and 242,487.64 is: 334,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,691.64 : 612,294.45 = 242,487.64 : x
  2. Step 2: Convert to fraction form
    443,691.64/612,294.45 = 242,487.64/x
  3. Step 3: Cross multiply
    443,691.64x = 612,294.45 × 242,487.64
  4. Step 4: Simplify right side
    443,691.64x = 148,473,836,165.60
  5. Step 5: Solve for x
    x = 148,473,836,165.60/443,691.64
  6. Step 6: Final answer
    x = 334,632.94

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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.