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Finding the Fourth Proportional to 547,813.49, 821,720.24 and 148,454.24

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Solution

The fourth proportional to 547,813.49, 821,720.24 and 148,454.24 is: 222,681.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,813.49 : 821,720.24 = 148,454.24 : x
  2. Step 2: Convert to fraction form
    547,813.49/821,720.24 = 148,454.24/x
  3. Step 3: Cross multiply
    547,813.49x = 821,720.24 × 148,454.24
  4. Step 4: Simplify right side
    547,813.49x = 121,987,856,147.25
  5. Step 5: Solve for x
    x = 121,987,856,147.25/547,813.49
  6. Step 6: Final answer
    x = 222,681.37

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Double scale
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Similar ratio
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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.