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Finding the Fourth Proportional to 266,065.20, 399,097.80 and 191,707.20

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Solution

The fourth proportional to 266,065.20, 399,097.80 and 191,707.20 is: 287,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,065.20 : 399,097.80 = 191,707.20 : x
  2. Step 2: Convert to fraction form
    266,065.20/399,097.80 = 191,707.20/x
  3. Step 3: Cross multiply
    266,065.20x = 399,097.80 × 191,707.20
  4. Step 4: Simplify right side
    266,065.20x = 76,509,921,764.16
  5. Step 5: Solve for x
    x = 76,509,921,764.16/266,065.20
  6. Step 6: Final answer
    x = 287,560.80

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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.