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Finding the Fourth Proportional to 624,563.40, 861,897.70 and 338,082.60

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Solution

The fourth proportional to 624,563.40, 861,897.70 and 338,082.60 is: 466,554.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,563.40 : 861,897.70 = 338,082.60 : x
  2. Step 2: Convert to fraction form
    624,563.40/861,897.70 = 338,082.60/x
  3. Step 3: Cross multiply
    624,563.40x = 861,897.70 × 338,082.60
  4. Step 4: Simplify right side
    624,563.40x = 291,392,615,350.02
  5. Step 5: Solve for x
    x = 291,392,615,350.02/624,563.40
  6. Step 6: Final answer
    x = 466,554.10

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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.