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Finding the Fourth Proportional to 346,697.90, 520,046.85 and 169,318.70

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Solution

The fourth proportional to 346,697.90, 520,046.85 and 169,318.70 is: 253,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,697.90 : 520,046.85 = 169,318.70 : x
  2. Step 2: Convert to fraction form
    346,697.90/520,046.85 = 169,318.70/x
  3. Step 3: Cross multiply
    346,697.90x = 520,046.85 × 169,318.70
  4. Step 4: Simplify right side
    346,697.90x = 88,053,656,581.10
  5. Step 5: Solve for x
    x = 88,053,656,581.10/346,697.90
  6. Step 6: Final answer
    x = 253,978.05

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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.