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Finding the Fourth Proportional to 353,011.90, 487,160.16 and 191,866.96

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Solution

The fourth proportional to 353,011.90, 487,160.16 and 191,866.96 is: 264,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,011.90 : 487,160.16 = 191,866.96 : x
  2. Step 2: Convert to fraction form
    353,011.90/487,160.16 = 191,866.96/x
  3. Step 3: Cross multiply
    353,011.90x = 487,160.16 × 191,866.96
  4. Step 4: Simplify right side
    353,011.90x = 93,469,938,932.31
  5. Step 5: Solve for x
    x = 93,469,938,932.31/353,011.90
  6. Step 6: Final answer
    x = 264,778.44

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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.