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Finding the Fourth Proportional to 353,514.77, 487,860.63 and 192,380.20

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Solution

The fourth proportional to 353,514.77, 487,860.63 and 192,380.20 is: 265,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,514.77 : 487,860.63 = 192,380.20 : x
  2. Step 2: Convert to fraction form
    353,514.77/487,860.63 = 192,380.20/x
  3. Step 3: Cross multiply
    353,514.77x = 487,860.63 × 192,380.20
  4. Step 4: Simplify right side
    353,514.77x = 93,854,725,571.53
  5. Step 5: Solve for x
    x = 93,854,725,571.53/353,514.77
  6. Step 6: Final answer
    x = 265,490.25

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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.