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Finding the Fourth Proportional to 543,223.89, 749,643.56 and 301,500.25

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Solution

The fourth proportional to 543,223.89, 749,643.56 and 301,500.25 is: 416,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,223.89 : 749,643.56 = 301,500.25 : x
  2. Step 2: Convert to fraction form
    543,223.89/749,643.56 = 301,500.25/x
  3. Step 3: Cross multiply
    543,223.89x = 749,643.56 × 301,500.25
  4. Step 4: Simplify right side
    543,223.89x = 226,017,720,750.89
  5. Step 5: Solve for x
    x = 226,017,720,750.89/543,223.89
  6. Step 6: Final answer
    x = 416,067.34

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.