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Finding the Fourth Proportional to 368,143.40, 552,215.10 and 361,922.60

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Solution

The fourth proportional to 368,143.40, 552,215.10 and 361,922.60 is: 542,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,143.40 : 552,215.10 = 361,922.60 : x
  2. Step 2: Convert to fraction form
    368,143.40/552,215.10 = 361,922.60/x
  3. Step 3: Cross multiply
    368,143.40x = 552,215.10 × 361,922.60
  4. Step 4: Simplify right side
    368,143.40x = 199,859,124,751.26
  5. Step 5: Solve for x
    x = 199,859,124,751.26/368,143.40
  6. Step 6: Final answer
    x = 542,883.90

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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.