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Finding the Fourth Proportional to 353,565, 487,910.32 and 192,416.56

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Solution

The fourth proportional to 353,565, 487,910.32 and 192,416.56 is: 265,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,565 : 487,910.32 = 192,416.56 : x
  2. Step 2: Convert to fraction form
    353,565/487,910.32 = 192,416.56/x
  3. Step 3: Cross multiply
    353,565x = 487,910.32 × 192,416.56
  4. Step 4: Simplify right side
    353,565x = 93,882,025,362.90
  5. Step 5: Solve for x
    x = 93,882,025,362.90/353,565
  6. Step 6: Final answer
    x = 265,529.75

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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.