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Finding the Fourth Proportional to 439,124.64, 605,992.56 and 237,920.64

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Solution

The fourth proportional to 439,124.64, 605,992.56 and 237,920.64 is: 328,330.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,124.64 : 605,992.56 = 237,920.64 : x
  2. Step 2: Convert to fraction form
    439,124.64/605,992.56 = 237,920.64/x
  3. Step 3: Cross multiply
    439,124.64x = 605,992.56 × 237,920.64
  4. Step 4: Simplify right side
    439,124.64x = 144,178,137,710.44
  5. Step 5: Solve for x
    x = 144,178,137,710.44/439,124.64
  6. Step 6: Final answer
    x = 328,330.78

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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.