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Finding the Fourth Proportional to 48,773.40, 67,303.80 and 28,631.10

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Solution

The fourth proportional to 48,773.40, 67,303.80 and 28,631.10 is: 39,508.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,773.40 : 67,303.80 = 28,631.10 : x
  2. Step 2: Convert to fraction form
    48,773.40/67,303.80 = 28,631.10/x
  3. Step 3: Cross multiply
    48,773.40x = 67,303.80 × 28,631.10
  4. Step 4: Simplify right side
    48,773.40x = 1,926,981,828.18
  5. Step 5: Solve for x
    x = 1,926,981,828.18/48,773.40
  6. Step 6: Final answer
    x = 39,508.87

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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.