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Finding the Fourth Proportional to 618,353.54, 853,327.97 and 342,729.17

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Solution

The fourth proportional to 618,353.54, 853,327.97 and 342,729.17 is: 472,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,353.54 : 853,327.97 = 342,729.17 : x
  2. Step 2: Convert to fraction form
    618,353.54/853,327.97 = 342,729.17/x
  3. Step 3: Cross multiply
    618,353.54x = 853,327.97 × 342,729.17
  4. Step 4: Simplify right side
    618,353.54x = 292,460,389,886.03
  5. Step 5: Solve for x
    x = 292,460,389,886.03/618,353.54
  6. Step 6: Final answer
    x = 472,966.30

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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.