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Finding the Fourth Proportional to 618,554.08, 853,016.88 and 403,625.44

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Solution

The fourth proportional to 618,554.08, 853,016.88 and 403,625.44 is: 556,619.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,554.08 : 853,016.88 = 403,625.44 : x
  2. Step 2: Convert to fraction form
    618,554.08/853,016.88 = 403,625.44/x
  3. Step 3: Cross multiply
    618,554.08x = 853,016.88 × 403,625.44
  4. Step 4: Simplify right side
    618,554.08x = 344,299,313,517.43
  5. Step 5: Solve for x
    x = 344,299,313,517.43/618,554.08
  6. Step 6: Final answer
    x = 556,619.58

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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.