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Finding the Fourth Proportional to 17,978.76, 26,945.06 and 15,752.48

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Solution

The fourth proportional to 17,978.76, 26,945.06 and 15,752.48 is: 23,608.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978.76 : 26,945.06 = 15,752.48 : x
  2. Step 2: Convert to fraction form
    17,978.76/26,945.06 = 15,752.48/x
  3. Step 3: Cross multiply
    17,978.76x = 26,945.06 × 15,752.48
  4. Step 4: Simplify right side
    17,978.76x = 424,451,305.26
  5. Step 5: Solve for x
    x = 424,451,305.26/17,978.76
  6. Step 6: Final answer
    x = 23,608.49

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1.5x scale

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.