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Finding the Fourth Proportional to 624,647.64, 862,020.60 and 338,173.80

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Solution

The fourth proportional to 624,647.64, 862,020.60 and 338,173.80 is: 466,683.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,647.64 : 862,020.60 = 338,173.80 : x
  2. Step 2: Convert to fraction form
    624,647.64/862,020.60 = 338,173.80/x
  3. Step 3: Cross multiply
    624,647.64x = 862,020.60 × 338,173.80
  4. Step 4: Simplify right side
    624,647.64x = 291,512,781,980.28
  5. Step 5: Solve for x
    x = 291,512,781,980.28/624,647.64
  6. Step 6: Final answer
    x = 466,683.56

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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.