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Finding the Fourth Proportional to 124,486.80, 186,730.20 and 41,380.80

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Solution

The fourth proportional to 124,486.80, 186,730.20 and 41,380.80 is: 62,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,486.80 : 186,730.20 = 41,380.80 : x
  2. Step 2: Convert to fraction form
    124,486.80/186,730.20 = 41,380.80/x
  3. Step 3: Cross multiply
    124,486.80x = 186,730.20 × 41,380.80
  4. Step 4: Simplify right side
    124,486.80x = 7,727,045,060.16
  5. Step 5: Solve for x
    x = 7,727,045,060.16/124,486.80
  6. Step 6: Final answer
    x = 62,071.20

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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.