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Finding the Fourth Proportional to 625,768.30, 863,555.04 and 353,889.57

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Solution

The fourth proportional to 625,768.30, 863,555.04 and 353,889.57 is: 488,364.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,768.30 : 863,555.04 = 353,889.57 : x
  2. Step 2: Convert to fraction form
    625,768.30/863,555.04 = 353,889.57/x
  3. Step 3: Cross multiply
    625,768.30x = 863,555.04 × 353,889.57
  4. Step 4: Simplify right side
    625,768.30x = 305,603,121,776.93
  5. Step 5: Solve for x
    x = 305,603,121,776.93/625,768.30
  6. Step 6: Final answer
    x = 488,364.66

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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.