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Finding the Fourth Proportional to 18,129.66, 25,019.17 and 10,063.50

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Solution

The fourth proportional to 18,129.66, 25,019.17 and 10,063.50 is: 13,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.66 : 25,019.17 = 10,063.50 : x
  2. Step 2: Convert to fraction form
    18,129.66/25,019.17 = 10,063.50/x
  3. Step 3: Cross multiply
    18,129.66x = 25,019.17 × 10,063.50
  4. Step 4: Simplify right side
    18,129.66x = 251,780,460.08
  5. Step 5: Solve for x
    x = 251,780,460.08/18,129.66
  6. Step 6: Final answer
    x = 13,887.76

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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.