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Finding the Fourth Proportional to 48,937.65, 67,530.72 and 28,790.63

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Solution

The fourth proportional to 48,937.65, 67,530.72 and 28,790.63 is: 39,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,937.65 : 67,530.72 = 28,790.63 : x
  2. Step 2: Convert to fraction form
    48,937.65/67,530.72 = 28,790.63/x
  3. Step 3: Cross multiply
    48,937.65x = 67,530.72 × 28,790.63
  4. Step 4: Simplify right side
    48,937.65x = 1,944,251,635.50
  5. Step 5: Solve for x
    x = 1,944,251,635.50/48,937.65
  6. Step 6: Final answer
    x = 39,729.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.