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Finding the Fourth Proportional to 624,636.56, 862,001.20 and 338,156.64

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Solution

The fourth proportional to 624,636.56, 862,001.20 and 338,156.64 is: 466,657.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,636.56 : 862,001.20 = 338,156.64 : x
  2. Step 2: Convert to fraction form
    624,636.56/862,001.20 = 338,156.64/x
  3. Step 3: Cross multiply
    624,636.56x = 862,001.20 × 338,156.64
  4. Step 4: Simplify right side
    624,636.56x = 291,491,429,467.97
  5. Step 5: Solve for x
    x = 291,491,429,467.97/624,636.56
  6. Step 6: Final answer
    x = 466,657.65

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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.