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Finding the Fourth Proportional to 693,814.60, 957,445.68 and 392,008.60

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Solution

The fourth proportional to 693,814.60, 957,445.68 and 392,008.60 is: 540,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,814.60 : 957,445.68 = 392,008.60 : x
  2. Step 2: Convert to fraction form
    693,814.60/957,445.68 = 392,008.60/x
  3. Step 3: Cross multiply
    693,814.60x = 957,445.68 × 392,008.60
  4. Step 4: Simplify right side
    693,814.60x = 375,326,940,592.85
  5. Step 5: Solve for x
    x = 375,326,940,592.85/693,814.60
  6. Step 6: Final answer
    x = 540,961.43

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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.