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Finding the Fourth Proportional to 353,119.64, 487,310.65 and 191,975.31

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Solution

The fourth proportional to 353,119.64, 487,310.65 and 191,975.31 is: 264,928.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,119.64 : 487,310.65 = 191,975.31 : x
  2. Step 2: Convert to fraction form
    353,119.64/487,310.65 = 191,975.31/x
  3. Step 3: Cross multiply
    353,119.64x = 487,310.65 × 191,975.31
  4. Step 4: Simplify right side
    353,119.64x = 93,551,610,663.50
  5. Step 5: Solve for x
    x = 93,551,610,663.50/353,119.64
  6. Step 6: Final answer
    x = 264,928.94

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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.