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Finding the Fourth Proportional to 391,047.38, 539,552.34 and 238,083.82

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Solution

The fourth proportional to 391,047.38, 539,552.34 and 238,083.82 is: 328,499.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,047.38 : 539,552.34 = 238,083.82 : x
  2. Step 2: Convert to fraction form
    391,047.38/539,552.34 = 238,083.82/x
  3. Step 3: Cross multiply
    391,047.38x = 539,552.34 × 238,083.82
  4. Step 4: Simplify right side
    391,047.38x = 128,458,682,197.14
  5. Step 5: Solve for x
    x = 128,458,682,197.14/391,047.38
  6. Step 6: Final answer
    x = 328,499.02

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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.