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Finding the Fourth Proportional to 570,788.10, 787,693.38 and 344,389.86

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Solution

The fourth proportional to 570,788.10, 787,693.38 and 344,389.86 is: 475,261.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,788.10 : 787,693.38 = 344,389.86 : x
  2. Step 2: Convert to fraction form
    570,788.10/787,693.38 = 344,389.86/x
  3. Step 3: Cross multiply
    570,788.10x = 787,693.38 × 344,389.86
  4. Step 4: Simplify right side
    570,788.10x = 271,273,612,861.13
  5. Step 5: Solve for x
    x = 271,273,612,861.13/570,788.10
  6. Step 6: Final answer
    x = 475,261.51

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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.