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Finding the Fourth Proportional to 318,554.31, 439,691.31 and 187,846.12

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Solution

The fourth proportional to 318,554.31, 439,691.31 and 187,846.12 is: 259,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,554.31 : 439,691.31 = 187,846.12 : x
  2. Step 2: Convert to fraction form
    318,554.31/439,691.31 = 187,846.12/x
  3. Step 3: Cross multiply
    318,554.31x = 439,691.31 × 187,846.12
  4. Step 4: Simplify right side
    318,554.31x = 82,594,306,581.22
  5. Step 5: Solve for x
    x = 82,594,306,581.22/318,554.31
  6. Step 6: Final answer
    x = 259,278.57

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1.5x scale

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.