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Finding the Fourth Proportional to 5,398.43, 7,395.87 and 5,196.18

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Solution

The fourth proportional to 5,398.43, 7,395.87 and 5,196.18 is: 7,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398.43 : 7,395.87 = 5,196.18 : x
  2. Step 2: Convert to fraction form
    5,398.43/7,395.87 = 5,196.18/x
  3. Step 3: Cross multiply
    5,398.43x = 7,395.87 × 5,196.18
  4. Step 4: Simplify right side
    5,398.43x = 38,430,319.00
  5. Step 5: Solve for x
    x = 38,430,319.00/5,398.43
  6. Step 6: Final answer
    x = 7,118.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.