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Finding the Fourth Proportional to 18,134.64, 25,026.03 and 11,061.72

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Solution

The fourth proportional to 18,134.64, 25,026.03 and 11,061.72 is: 15,265.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,134.64 : 25,026.03 = 11,061.72 : x
  2. Step 2: Convert to fraction form
    18,134.64/25,026.03 = 11,061.72/x
  3. Step 3: Cross multiply
    18,134.64x = 25,026.03 × 11,061.72
  4. Step 4: Simplify right side
    18,134.64x = 276,830,936.57
  5. Step 5: Solve for x
    x = 276,830,936.57/18,134.64
  6. Step 6: Final answer
    x = 15,265.31

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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.