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Finding the Fourth Proportional to 5,393.68, 7,442.85 and 3,036.22

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Solution

The fourth proportional to 5,393.68, 7,442.85 and 3,036.22 is: 4,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.68 : 7,442.85 = 3,036.22 : x
  2. Step 2: Convert to fraction form
    5,393.68/7,442.85 = 3,036.22/x
  3. Step 3: Cross multiply
    5,393.68x = 7,442.85 × 3,036.22
  4. Step 4: Simplify right side
    5,393.68x = 22,598,130.03
  5. Step 5: Solve for x
    x = 22,598,130.03/5,393.68
  6. Step 6: Final answer
    x = 4,189.74

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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.