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Finding the Fourth Proportional to 267,392.10, 401,088.15 and 172,913.70

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Solution

The fourth proportional to 267,392.10, 401,088.15 and 172,913.70 is: 259,370.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,392.10 : 401,088.15 = 172,913.70 : x
  2. Step 2: Convert to fraction form
    267,392.10/401,088.15 = 172,913.70/x
  3. Step 3: Cross multiply
    267,392.10x = 401,088.15 × 172,913.70
  4. Step 4: Simplify right side
    267,392.10x = 69,353,636,042.66
  5. Step 5: Solve for x
    x = 69,353,636,042.66/267,392.10
  6. Step 6: Final answer
    x = 259,370.55

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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.