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Finding the Fourth Proportional to 624,698.88, 862,083.20 and 338,219.20

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Solution

The fourth proportional to 624,698.88, 862,083.20 and 338,219.20 is: 466,741.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,698.88 : 862,083.20 = 338,219.20 : x
  2. Step 2: Convert to fraction form
    624,698.88/862,083.20 = 338,219.20/x
  3. Step 3: Cross multiply
    624,698.88x = 862,083.20 × 338,219.20
  4. Step 4: Simplify right side
    624,698.88x = 291,573,090,237.44
  5. Step 5: Solve for x
    x = 291,573,090,237.44/624,698.88
  6. Step 6: Final answer
    x = 466,741.82

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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.