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Finding the Fourth Proportional to 107,347.20, 160,972.20 and 40,765.20

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Solution

The fourth proportional to 107,347.20, 160,972.20 and 40,765.20 is: 61,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,347.20 : 160,972.20 = 40,765.20 : x
  2. Step 2: Convert to fraction form
    107,347.20/160,972.20 = 40,765.20/x
  3. Step 3: Cross multiply
    107,347.20x = 160,972.20 × 40,765.20
  4. Step 4: Simplify right side
    107,347.20x = 6,562,063,927.44
  5. Step 5: Solve for x
    x = 6,562,063,927.44/107,347.20
  6. Step 6: Final answer
    x = 61,129.34

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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.