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Finding the Fourth Proportional to 48,730.40, 72,980.40 and 33,063.20

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Solution

The fourth proportional to 48,730.40, 72,980.40 and 33,063.20 is: 49,516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,730.40 : 72,980.40 = 33,063.20 : x
  2. Step 2: Convert to fraction form
    48,730.40/72,980.40 = 33,063.20/x
  3. Step 3: Cross multiply
    48,730.40x = 72,980.40 × 33,063.20
  4. Step 4: Simplify right side
    48,730.40x = 2,412,965,561.28
  5. Step 5: Solve for x
    x = 2,412,965,561.28/48,730.40
  6. Step 6: Final answer
    x = 49,516.64

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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.