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Finding the Fourth Proportional to 15,140.13, 22,713.83 and 4,751.88

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Solution

The fourth proportional to 15,140.13, 22,713.83 and 4,751.88 is: 7,128.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.13 : 22,713.83 = 4,751.88 : x
  2. Step 2: Convert to fraction form
    15,140.13/22,713.83 = 4,751.88/x
  3. Step 3: Cross multiply
    15,140.13x = 22,713.83 × 4,751.88
  4. Step 4: Simplify right side
    15,140.13x = 107,933,394.50
  5. Step 5: Solve for x
    x = 107,933,394.50/15,140.13
  6. Step 6: Final answer
    x = 7,128.96

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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.