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Finding the Fourth Proportional to 8,312.53, 11,472.48 and 5,479.42

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Solution

The fourth proportional to 8,312.53, 11,472.48 and 5,479.42 is: 7,562.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.53 : 11,472.48 = 5,479.42 : x
  2. Step 2: Convert to fraction form
    8,312.53/11,472.48 = 5,479.42/x
  3. Step 3: Cross multiply
    8,312.53x = 11,472.48 × 5,479.42
  4. Step 4: Simplify right side
    8,312.53x = 62,862,536.36
  5. Step 5: Solve for x
    x = 62,862,536.36/8,312.53
  6. Step 6: Final answer
    x = 7,562.38

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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.