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Finding the Third Proportional to 31,288 and 46,776

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Solution

The third proportional to 31,288 and 46,776 is: 69,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,288 : 46,776 = 46,776 : x
  2. Step 2: Convert to fraction form
    31,288/46,776 = 46,776/x
  3. Step 3: Cross multiply
    31,288x = 46,776 × 46,776
  4. Step 4: Simplify right side
    31,288x = 2,187,994,176
  5. Step 5: Solve for x
    x = 2,187,994,176/31,288
  6. Step 6: Final answer
    x = 69,930.78

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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.