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Finding the Third Proportional to 31,318.50 and 48,473

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Solution

The third proportional to 31,318.50 and 48,473 is: 75,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.50 : 48,473 = 48,473 : x
  2. Step 2: Convert to fraction form
    31,318.50/48,473 = 48,473/x
  3. Step 3: Cross multiply
    31,318.50x = 48,473 × 48,473
  4. Step 4: Simplify right side
    31,318.50x = 2,349,631,729
  5. Step 5: Solve for x
    x = 2,349,631,729/31,318.50
  6. Step 6: Final answer
    x = 75,023.76

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.