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Finding the Fourth Proportional to 625,570.72, 863,686.80 and 411,091.36

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Solution

The fourth proportional to 625,570.72, 863,686.80 and 411,091.36 is: 567,568.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,570.72 : 863,686.80 = 411,091.36 : x
  2. Step 2: Convert to fraction form
    625,570.72/863,686.80 = 411,091.36/x
  3. Step 3: Cross multiply
    625,570.72x = 863,686.80 × 411,091.36
  4. Step 4: Simplify right side
    625,570.72x = 355,054,181,226.05
  5. Step 5: Solve for x
    x = 355,054,181,226.05/625,570.72
  6. Step 6: Final answer
    x = 567,568.41

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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.