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Finding the Fourth Proportional to 924,478.38, 1,384,350.03 and 639,774.72

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Solution

The fourth proportional to 924,478.38, 1,384,350.03 and 639,774.72 is: 958,023.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    924,478.38 : 1,384,350.03 = 639,774.72 : x
  2. Step 2: Convert to fraction form
    924,478.38/1,384,350.03 = 639,774.72/x
  3. Step 3: Cross multiply
    924,478.38x = 1,384,350.03 × 639,774.72
  4. Step 4: Simplify right side
    924,478.38x = 885,672,152,825.24
  5. Step 5: Solve for x
    x = 885,672,152,825.24/924,478.38
  6. Step 6: Final answer
    x = 958,023.65

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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.