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Finding the Fourth Proportional to 385,268.10, 577,902.15 and 267,072.90

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Solution

The fourth proportional to 385,268.10, 577,902.15 and 267,072.90 is: 400,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,268.10 : 577,902.15 = 267,072.90 : x
  2. Step 2: Convert to fraction form
    385,268.10/577,902.15 = 267,072.90/x
  3. Step 3: Cross multiply
    385,268.10x = 577,902.15 × 267,072.90
  4. Step 4: Simplify right side
    385,268.10x = 154,342,003,116.74
  5. Step 5: Solve for x
    x = 154,342,003,116.74/385,268.10
  6. Step 6: Final answer
    x = 400,609.35

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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.