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Finding the Fourth Proportional to 386,121.51, 532,847.85 and 235,218.51

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Solution

The fourth proportional to 386,121.51, 532,847.85 and 235,218.51 is: 324,601.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,121.51 : 532,847.85 = 235,218.51 : x
  2. Step 2: Convert to fraction form
    386,121.51/532,847.85 = 235,218.51/x
  3. Step 3: Cross multiply
    386,121.51x = 532,847.85 × 235,218.51
  4. Step 4: Simplify right side
    386,121.51x = 125,335,677,333.70
  5. Step 5: Solve for x
    x = 125,335,677,333.70/386,121.51
  6. Step 6: Final answer
    x = 324,601.65

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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.