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Finding the Fourth Proportional to 332,388.78, 498,583.20 and 83,070.78

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Solution

The fourth proportional to 332,388.78, 498,583.20 and 83,070.78 is: 124,606.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,388.78 : 498,583.20 = 83,070.78 : x
  2. Step 2: Convert to fraction form
    332,388.78/498,583.20 = 83,070.78/x
  3. Step 3: Cross multiply
    332,388.78x = 498,583.20 × 83,070.78
  4. Step 4: Simplify right side
    332,388.78x = 41,417,695,318.90
  5. Step 5: Solve for x
    x = 41,417,695,318.90/332,388.78
  6. Step 6: Final answer
    x = 124,606.18

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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.