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Finding the Fourth Proportional to 711,604.44, 982,025.21 and 389,319.92

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Solution

The fourth proportional to 711,604.44, 982,025.21 and 389,319.92 is: 537,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,604.44 : 982,025.21 = 389,319.92 : x
  2. Step 2: Convert to fraction form
    711,604.44/982,025.21 = 389,319.92/x
  3. Step 3: Cross multiply
    711,604.44x = 982,025.21 × 389,319.92
  4. Step 4: Simplify right side
    711,604.44x = 382,321,976,703.65
  5. Step 5: Solve for x
    x = 382,321,976,703.65/711,604.44
  6. Step 6: Final answer
    x = 537,267.55

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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.