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Finding the Fourth Proportional to 353,606.12, 487,978.48 and 192,460.78

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Solution

The fourth proportional to 353,606.12, 487,978.48 and 192,460.78 is: 265,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,606.12 : 487,978.48 = 192,460.78 : x
  2. Step 2: Convert to fraction form
    353,606.12/487,978.48 = 192,460.78/x
  3. Step 3: Cross multiply
    353,606.12x = 487,978.48 × 192,460.78
  4. Step 4: Simplify right side
    353,606.12x = 93,916,720,024.41
  5. Step 5: Solve for x
    x = 93,916,720,024.41/353,606.12
  6. Step 6: Final answer
    x = 265,596.99

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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.