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Finding the Fourth Proportional to 439,034.88, 605,869.12 and 237,830.88

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Solution

The fourth proportional to 439,034.88, 605,869.12 and 237,830.88 is: 328,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,034.88 : 605,869.12 = 237,830.88 : x
  2. Step 2: Convert to fraction form
    439,034.88/605,869.12 = 237,830.88/x
  3. Step 3: Cross multiply
    439,034.88x = 605,869.12 × 237,830.88
  4. Step 4: Simplify right side
    439,034.88x = 144,094,385,974.43
  5. Step 5: Solve for x
    x = 144,094,385,974.43/439,034.88
  6. Step 6: Final answer
    x = 328,207.15

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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.