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Finding the Fourth Proportional to 191,801.80, 288,005.10 and 112,976.20

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Solution

The fourth proportional to 191,801.80, 288,005.10 and 112,976.20 is: 169,642.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,801.80 : 288,005.10 = 112,976.20 : x
  2. Step 2: Convert to fraction form
    191,801.80/288,005.10 = 112,976.20/x
  3. Step 3: Cross multiply
    191,801.80x = 288,005.10 × 112,976.20
  4. Step 4: Simplify right side
    191,801.80x = 32,537,721,778.62
  5. Step 5: Solve for x
    x = 32,537,721,778.62/191,801.80
  6. Step 6: Final answer
    x = 169,642.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.