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Finding the Fourth Proportional to 206,590.80, 309,886.20 and 177,066.30

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Solution

The fourth proportional to 206,590.80, 309,886.20 and 177,066.30 is: 265,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,590.80 : 309,886.20 = 177,066.30 : x
  2. Step 2: Convert to fraction form
    206,590.80/309,886.20 = 177,066.30/x
  3. Step 3: Cross multiply
    206,590.80x = 309,886.20 × 177,066.30
  4. Step 4: Simplify right side
    206,590.80x = 54,870,402,855.06
  5. Step 5: Solve for x
    x = 54,870,402,855.06/206,590.80
  6. Step 6: Final answer
    x = 265,599.45

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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.