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Finding the Fourth Proportional to 666,996.22, 1,000,191.58 and 287,737.61

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Solution

The fourth proportional to 666,996.22, 1,000,191.58 and 287,737.61 is: 431,475.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,996.22 : 1,000,191.58 = 287,737.61 : x
  2. Step 2: Convert to fraction form
    666,996.22/1,000,191.58 = 287,737.61/x
  3. Step 3: Cross multiply
    666,996.22x = 1,000,191.58 × 287,737.61
  4. Step 4: Simplify right side
    666,996.22x = 287,792,734,771.32
  5. Step 5: Solve for x
    x = 287,792,734,771.32/666,996.22
  6. Step 6: Final answer
    x = 431,475.81

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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.