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Finding the Fourth Proportional to 7,073.72, 9,761.26 and 4,421

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Solution

The fourth proportional to 7,073.72, 9,761.26 and 4,421 is: 6,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,073.72 : 9,761.26 = 4,421 : x
  2. Step 2: Convert to fraction form
    7,073.72/9,761.26 = 4,421/x
  3. Step 3: Cross multiply
    7,073.72x = 9,761.26 × 4,421
  4. Step 4: Simplify right side
    7,073.72x = 43,154,530.46
  5. Step 5: Solve for x
    x = 43,154,530.46/7,073.72
  6. Step 6: Final answer
    x = 6,100.68

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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.