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Finding the Fourth Proportional to 5,335.48, 7,363.14 and 2,978.20

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Solution

The fourth proportional to 5,335.48, 7,363.14 and 2,978.20 is: 4,110.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,335.48 : 7,363.14 = 2,978.20 : x
  2. Step 2: Convert to fraction form
    5,335.48/7,363.14 = 2,978.20/x
  3. Step 3: Cross multiply
    5,335.48x = 7,363.14 × 2,978.20
  4. Step 4: Simplify right side
    5,335.48x = 21,928,903.55
  5. Step 5: Solve for x
    x = 21,928,903.55/5,335.48
  6. Step 6: Final answer
    x = 4,110.02

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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.