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Finding the Fourth Proportional to 7,070.34, 9,757.38 and 3,926.53

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Solution

The fourth proportional to 7,070.34, 9,757.38 and 3,926.53 is: 5,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,070.34 : 9,757.38 = 3,926.53 : x
  2. Step 2: Convert to fraction form
    7,070.34/9,757.38 = 3,926.53/x
  3. Step 3: Cross multiply
    7,070.34x = 9,757.38 × 3,926.53
  4. Step 4: Simplify right side
    7,070.34x = 38,312,650.13
  5. Step 5: Solve for x
    x = 38,312,650.13/7,070.34
  6. Step 6: Final answer
    x = 5,418.78

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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.