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Finding the Fourth Proportional to 612,172.28, 844,812.11 and 340,251.64

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Solution

The fourth proportional to 612,172.28, 844,812.11 and 340,251.64 is: 469,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,172.28 : 844,812.11 = 340,251.64 : x
  2. Step 2: Convert to fraction form
    612,172.28/844,812.11 = 340,251.64/x
  3. Step 3: Cross multiply
    612,172.28x = 844,812.11 × 340,251.64
  4. Step 4: Simplify right side
    612,172.28x = 287,448,704,657.96
  5. Step 5: Solve for x
    x = 287,448,704,657.96/612,172.28
  6. Step 6: Final answer
    x = 469,555.24

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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.