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Finding the Fourth Proportional to 353,321.70, 487,569.90 and 192,176.52

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Solution

The fourth proportional to 353,321.70, 487,569.90 and 192,176.52 is: 265,195.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,321.70 : 487,569.90 = 192,176.52 : x
  2. Step 2: Convert to fraction form
    353,321.70/487,569.90 = 192,176.52/x
  3. Step 3: Cross multiply
    353,321.70x = 487,569.90 × 192,176.52
  4. Step 4: Simplify right side
    353,321.70x = 93,699,486,638.75
  5. Step 5: Solve for x
    x = 93,699,486,638.75/353,321.70
  6. Step 6: Final answer
    x = 265,195.96

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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.