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Finding the Fourth Proportional to 624,618.64, 861,980.58 and 338,144.80

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Solution

The fourth proportional to 624,618.64, 861,980.58 and 338,144.80 is: 466,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,618.64 : 861,980.58 = 338,144.80 : x
  2. Step 2: Convert to fraction form
    624,618.64/861,980.58 = 338,144.80/x
  3. Step 3: Cross multiply
    624,618.64x = 861,980.58 × 338,144.80
  4. Step 4: Simplify right side
    624,618.64x = 291,474,250,827.98
  5. Step 5: Solve for x
    x = 291,474,250,827.98/624,618.64
  6. Step 6: Final answer
    x = 466,643.54

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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.