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Finding the Fourth Proportional to 625,768.80, 863,555.73 and 353,890.08

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Solution

The fourth proportional to 625,768.80, 863,555.73 and 353,890.08 is: 488,365.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,768.80 : 863,555.73 = 353,890.08 : x
  2. Step 2: Convert to fraction form
    625,768.80/863,555.73 = 353,890.08/x
  3. Step 3: Cross multiply
    625,768.80x = 863,555.73 × 353,890.08
  4. Step 4: Simplify right side
    625,768.80x = 305,603,806,374.16
  5. Step 5: Solve for x
    x = 305,603,806,374.16/625,768.80
  6. Step 6: Final answer
    x = 488,365.36

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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.