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Finding the Fourth Proportional to 472,891.80, 709,337.70 and 367,138.20

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Solution

The fourth proportional to 472,891.80, 709,337.70 and 367,138.20 is: 550,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,891.80 : 709,337.70 = 367,138.20 : x
  2. Step 2: Convert to fraction form
    472,891.80/709,337.70 = 367,138.20/x
  3. Step 3: Cross multiply
    472,891.80x = 709,337.70 × 367,138.20
  4. Step 4: Simplify right side
    472,891.80x = 260,424,966,370.14
  5. Step 5: Solve for x
    x = 260,424,966,370.14/472,891.80
  6. Step 6: Final answer
    x = 550,707.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.