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Finding the Fourth Proportional to 7,502.80, 10,358.20 and 6,672.36

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Solution

The fourth proportional to 7,502.80, 10,358.20 and 6,672.36 is: 9,211.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,502.80 : 10,358.20 = 6,672.36 : x
  2. Step 2: Convert to fraction form
    7,502.80/10,358.20 = 6,672.36/x
  3. Step 3: Cross multiply
    7,502.80x = 10,358.20 × 6,672.36
  4. Step 4: Simplify right side
    7,502.80x = 69,113,639.35
  5. Step 5: Solve for x
    x = 69,113,639.35/7,502.80
  6. Step 6: Final answer
    x = 9,211.71

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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.