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Finding the Fourth Proportional to 206,323.80, 309,511.08 and 79,966.16

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Solution

The fourth proportional to 206,323.80, 309,511.08 and 79,966.16 is: 119,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,323.80 : 309,511.08 = 79,966.16 : x
  2. Step 2: Convert to fraction form
    206,323.80/309,511.08 = 79,966.16/x
  3. Step 3: Cross multiply
    206,323.80x = 309,511.08 × 79,966.16
  4. Step 4: Simplify right side
    206,323.80x = 24,750,412,545.05
  5. Step 5: Solve for x
    x = 24,750,412,545.05/206,323.80
  6. Step 6: Final answer
    x = 119,959.08

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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.