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Finding the Fourth Proportional to 18,842.76, 26,003.16 and 10,884.78

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Solution

The fourth proportional to 18,842.76, 26,003.16 and 10,884.78 is: 15,021.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.76 : 26,003.16 = 10,884.78 : x
  2. Step 2: Convert to fraction form
    18,842.76/26,003.16 = 10,884.78/x
  3. Step 3: Cross multiply
    18,842.76x = 26,003.16 × 10,884.78
  4. Step 4: Simplify right side
    18,842.76x = 283,038,675.90
  5. Step 5: Solve for x
    x = 283,038,675.90/18,842.76
  6. Step 6: Final answer
    x = 15,021.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.