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Finding the Fourth Proportional to 439,078.74, 605,931.57 and 237,874.74

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Solution

The fourth proportional to 439,078.74, 605,931.57 and 237,874.74 is: 328,268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,078.74 : 605,931.57 = 237,874.74 : x
  2. Step 2: Convert to fraction form
    439,078.74/605,931.57 = 237,874.74/x
  3. Step 3: Cross multiply
    439,078.74x = 605,931.57 × 237,874.74
  4. Step 4: Simplify right side
    439,078.74x = 144,135,814,671.54
  5. Step 5: Solve for x
    x = 144,135,814,671.54/439,078.74
  6. Step 6: Final answer
    x = 328,268.72

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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.