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Finding the Fourth Proportional to 246,493.90, 369,781.70 and 86,528.32

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Solution

The fourth proportional to 246,493.90, 369,781.70 and 86,528.32 is: 129,806.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,493.90 : 369,781.70 = 86,528.32 : x
  2. Step 2: Convert to fraction form
    246,493.90/369,781.70 = 86,528.32/x
  3. Step 3: Cross multiply
    246,493.90x = 369,781.70 × 86,528.32
  4. Step 4: Simplify right side
    246,493.90x = 31,996,589,267.74
  5. Step 5: Solve for x
    x = 31,996,589,267.74/246,493.90
  6. Step 6: Final answer
    x = 129,806.82

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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.