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Finding the Fourth Proportional to 247,218.50, 370,809.12 and 78,732.02

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Solution

The fourth proportional to 247,218.50, 370,809.12 and 78,732.02 is: 118,092.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,218.50 : 370,809.12 = 78,732.02 : x
  2. Step 2: Convert to fraction form
    247,218.50/370,809.12 = 78,732.02/x
  3. Step 3: Cross multiply
    247,218.50x = 370,809.12 × 78,732.02
  4. Step 4: Simplify right side
    247,218.50x = 29,194,551,052.02
  5. Step 5: Solve for x
    x = 29,194,551,052.02/247,218.50
  6. Step 6: Final answer
    x = 118,092.10

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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.