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Finding the Fourth Proportional to 266,123.65, 399,249.27 and 88,632.19

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Solution

The fourth proportional to 266,123.65, 399,249.27 and 88,632.19 is: 132,969.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,123.65 : 399,249.27 = 88,632.19 : x
  2. Step 2: Convert to fraction form
    266,123.65/399,249.27 = 88,632.19/x
  3. Step 3: Cross multiply
    266,123.65x = 399,249.27 × 88,632.19
  4. Step 4: Simplify right side
    266,123.65x = 35,386,337,156.00
  5. Step 5: Solve for x
    x = 35,386,337,156.00/266,123.65
  6. Step 6: Final answer
    x = 132,969.53

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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.