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Finding the Third Proportional to 31,572 and 48,438

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Solution

The third proportional to 31,572 and 48,438 is: 74,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,572 : 48,438 = 48,438 : x
  2. Step 2: Convert to fraction form
    31,572/48,438 = 48,438/x
  3. Step 3: Cross multiply
    31,572x = 48,438 × 48,438
  4. Step 4: Simplify right side
    31,572x = 2,346,239,844
  5. Step 5: Solve for x
    x = 2,346,239,844/31,572
  6. Step 6: Final answer
    x = 74,313.94

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.