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Finding the Fourth Proportional to 353,513.77, 487,859.25 and 192,379.20

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Solution

The fourth proportional to 353,513.77, 487,859.25 and 192,379.20 is: 265,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,513.77 : 487,859.25 = 192,379.20 : x
  2. Step 2: Convert to fraction form
    353,513.77/487,859.25 = 192,379.20/x
  3. Step 3: Cross multiply
    353,513.77x = 487,859.25 × 192,379.20
  4. Step 4: Simplify right side
    353,513.77x = 93,853,973,863.76
  5. Step 5: Solve for x
    x = 93,853,973,863.76/353,513.77
  6. Step 6: Final answer
    x = 265,488.88

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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.