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Finding the Third Proportional to 15,748.50 and 25,776

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Solution

The third proportional to 15,748.50 and 25,776 is: 42,188.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.50 : 25,776 = 25,776 : x
  2. Step 2: Convert to fraction form
    15,748.50/25,776 = 25,776/x
  3. Step 3: Cross multiply
    15,748.50x = 25,776 × 25,776
  4. Step 4: Simplify right side
    15,748.50x = 664,402,176
  5. Step 5: Solve for x
    x = 664,402,176/15,748.50
  6. Step 6: Final answer
    x = 42,188.28

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.