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Finding the Fourth Proportional to 2,962.20, 4,442.55 and 881.74

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Solution

The fourth proportional to 2,962.20, 4,442.55 and 881.74 is: 1,322.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,962.20 : 4,442.55 = 881.74 : x
  2. Step 2: Convert to fraction form
    2,962.20/4,442.55 = 881.74/x
  3. Step 3: Cross multiply
    2,962.20x = 4,442.55 × 881.74
  4. Step 4: Simplify right side
    2,962.20x = 3,917,174.04
  5. Step 5: Solve for x
    x = 3,917,174.04/2,962.20
  6. Step 6: Final answer
    x = 1,322.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.