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Finding the Fourth Proportional to 403,357.80, 556,221.18 and 267,344.52

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Solution

The fourth proportional to 403,357.80, 556,221.18 and 267,344.52 is: 368,661.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,357.80 : 556,221.18 = 267,344.52 : x
  2. Step 2: Convert to fraction form
    403,357.80/556,221.18 = 267,344.52/x
  3. Step 3: Cross multiply
    403,357.80x = 556,221.18 × 267,344.52
  4. Step 4: Simplify right side
    403,357.80x = 148,702,684,380.93
  5. Step 5: Solve for x
    x = 148,702,684,380.93/403,357.80
  6. Step 6: Final answer
    x = 368,661.98

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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.