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Finding the Fourth Proportional to 2,962.16, 4,442.28 and 987.26

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Solution

The fourth proportional to 2,962.16, 4,442.28 and 987.26 is: 1,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,962.16 : 4,442.28 = 987.26 : x
  2. Step 2: Convert to fraction form
    2,962.16/4,442.28 = 987.26/x
  3. Step 3: Cross multiply
    2,962.16x = 4,442.28 × 987.26
  4. Step 4: Simplify right side
    2,962.16x = 4,385,663.14
  5. Step 5: Solve for x
    x = 4,385,663.14/2,962.16
  6. Step 6: Final answer
    x = 1,480.57

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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.