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Finding the Fourth Proportional to 48,335.20, 72,697.20 and 43,280.80

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Solution

The fourth proportional to 48,335.20, 72,697.20 and 43,280.80 is: 65,095.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,335.20 : 72,697.20 = 43,280.80 : x
  2. Step 2: Convert to fraction form
    48,335.20/72,697.20 = 43,280.80/x
  3. Step 3: Cross multiply
    48,335.20x = 72,697.20 × 43,280.80
  4. Step 4: Simplify right side
    48,335.20x = 3,146,392,973.76
  5. Step 5: Solve for x
    x = 3,146,392,973.76/48,335.20
  6. Step 6: Final answer
    x = 65,095.27

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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.