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Finding the Fourth Proportional to 630,778.88, 945,818.28 and 209,825.12

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Solution

The fourth proportional to 630,778.88, 945,818.28 and 209,825.12 is: 314,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,778.88 : 945,818.28 = 209,825.12 : x
  2. Step 2: Convert to fraction form
    630,778.88/945,818.28 = 209,825.12/x
  3. Step 3: Cross multiply
    630,778.88x = 945,818.28 × 209,825.12
  4. Step 4: Simplify right side
    630,778.88x = 198,456,434,099.19
  5. Step 5: Solve for x
    x = 198,456,434,099.19/630,778.88
  6. Step 6: Final answer
    x = 314,621.24

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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.