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Finding the Fourth Proportional to 54,657.20, 81,985.80 and 44,937.20

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Solution

The fourth proportional to 54,657.20, 81,985.80 and 44,937.20 is: 67,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,657.20 : 81,985.80 = 44,937.20 : x
  2. Step 2: Convert to fraction form
    54,657.20/81,985.80 = 44,937.20/x
  3. Step 3: Cross multiply
    54,657.20x = 81,985.80 × 44,937.20
  4. Step 4: Simplify right side
    54,657.20x = 3,684,212,291.76
  5. Step 5: Solve for x
    x = 3,684,212,291.76/54,657.20
  6. Step 6: Final answer
    x = 67,405.80

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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.