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Finding the Fourth Proportional to 7,275.80, 10,041.86 and 4,131.92

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Solution

The fourth proportional to 7,275.80, 10,041.86 and 4,131.92 is: 5,702.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.80 : 10,041.86 = 4,131.92 : x
  2. Step 2: Convert to fraction form
    7,275.80/10,041.86 = 4,131.92/x
  3. Step 3: Cross multiply
    7,275.80x = 10,041.86 × 4,131.92
  4. Step 4: Simplify right side
    7,275.80x = 41,492,162.17
  5. Step 5: Solve for x
    x = 41,492,162.17/7,275.80
  6. Step 6: Final answer
    x = 5,702.76

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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.