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Finding the Fourth Proportional to 48,721.60, 73,060.80 and 22,434.40

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Solution

The fourth proportional to 48,721.60, 73,060.80 and 22,434.40 is: 33,641.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,721.60 : 73,060.80 = 22,434.40 : x
  2. Step 2: Convert to fraction form
    48,721.60/73,060.80 = 22,434.40/x
  3. Step 3: Cross multiply
    48,721.60x = 73,060.80 × 22,434.40
  4. Step 4: Simplify right side
    48,721.60x = 1,639,075,211.52
  5. Step 5: Solve for x
    x = 1,639,075,211.52/48,721.60
  6. Step 6: Final answer
    x = 33,641.65

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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.