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Finding the Fourth Proportional to 438,706.85, 605,456.30 and 266,585.09

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Solution

The fourth proportional to 438,706.85, 605,456.30 and 266,585.09 is: 367,912.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,706.85 : 605,456.30 = 266,585.09 : x
  2. Step 2: Convert to fraction form
    438,706.85/605,456.30 = 266,585.09/x
  3. Step 3: Cross multiply
    438,706.85x = 605,456.30 × 266,585.09
  4. Step 4: Simplify right side
    438,706.85x = 161,405,619,865.75
  5. Step 5: Solve for x
    x = 161,405,619,865.75/438,706.85
  6. Step 6: Final answer
    x = 367,912.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.