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Finding the Fourth Proportional to 191,235.52, 263,911.52 and 105,198.16

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Solution

The fourth proportional to 191,235.52, 263,911.52 and 105,198.16 is: 145,177.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,235.52 : 263,911.52 = 105,198.16 : x
  2. Step 2: Convert to fraction form
    191,235.52/263,911.52 = 105,198.16/x
  3. Step 3: Cross multiply
    191,235.52x = 263,911.52 × 105,198.16
  4. Step 4: Simplify right side
    191,235.52x = 27,763,006,306.80
  5. Step 5: Solve for x
    x = 27,763,006,306.80/191,235.52
  6. Step 6: Final answer
    x = 145,177.04

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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.