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Finding the Fourth Proportional to 353,112.62, 487,305.04 and 191,978.78

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Solution

The fourth proportional to 353,112.62, 487,305.04 and 191,978.78 is: 264,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,112.62 : 487,305.04 = 191,978.78 : x
  2. Step 2: Convert to fraction form
    353,112.62/487,305.04 = 191,978.78/x
  3. Step 3: Cross multiply
    353,112.62x = 487,305.04 × 191,978.78
  4. Step 4: Simplify right side
    353,112.62x = 93,552,227,805.37
  5. Step 5: Solve for x
    x = 93,552,227,805.37/353,112.62
  6. Step 6: Final answer
    x = 264,935.95

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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.