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Finding the Fourth Proportional to 622,390.20, 933,239.70 and 267,343.80

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Solution

The fourth proportional to 622,390.20, 933,239.70 and 267,343.80 is: 400,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,390.20 : 933,239.70 = 267,343.80 : x
  2. Step 2: Convert to fraction form
    622,390.20/933,239.70 = 267,343.80/x
  3. Step 3: Cross multiply
    622,390.20x = 933,239.70 × 267,343.80
  4. Step 4: Simplify right side
    622,390.20x = 249,495,847,708.86
  5. Step 5: Solve for x
    x = 249,495,847,708.86/622,390.20
  6. Step 6: Final answer
    x = 400,867.25

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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.