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Finding the Fourth Proportional to 406,858.70, 561,470.12 and 234,812.40

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Solution

The fourth proportional to 406,858.70, 561,470.12 and 234,812.40 is: 324,044.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,858.70 : 561,470.12 = 234,812.40 : x
  2. Step 2: Convert to fraction form
    406,858.70/561,470.12 = 234,812.40/x
  3. Step 3: Cross multiply
    406,858.70x = 561,470.12 × 234,812.40
  4. Step 4: Simplify right side
    406,858.70x = 131,840,146,405.49
  5. Step 5: Solve for x
    x = 131,840,146,405.49/406,858.70
  6. Step 6: Final answer
    x = 324,044.06

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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.