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Finding the Fourth Proportional to 713,084.22, 984,067.11 and 390,791.70

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Solution

The fourth proportional to 713,084.22, 984,067.11 and 390,791.70 is: 539,298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,084.22 : 984,067.11 = 390,791.70 : x
  2. Step 2: Convert to fraction form
    713,084.22/984,067.11 = 390,791.70/x
  3. Step 3: Cross multiply
    713,084.22x = 984,067.11 × 390,791.70
  4. Step 4: Simplify right side
    713,084.22x = 384,565,258,830.99
  5. Step 5: Solve for x
    x = 384,565,258,830.99/713,084.22
  6. Step 6: Final answer
    x = 539,298.51

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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.