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Finding the Fourth Proportional to 5,402.01, 7,454.88 and 2,979.45

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Solution

The fourth proportional to 5,402.01, 7,454.88 and 2,979.45 is: 4,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.01 : 7,454.88 = 2,979.45 : x
  2. Step 2: Convert to fraction form
    5,402.01/7,454.88 = 2,979.45/x
  3. Step 3: Cross multiply
    5,402.01x = 7,454.88 × 2,979.45
  4. Step 4: Simplify right side
    5,402.01x = 22,211,442.22
  5. Step 5: Solve for x
    x = 22,211,442.22/5,402.01
  6. Step 6: Final answer
    x = 4,111.70

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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.