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Finding the Fourth Proportional to 400,858,892.40, 561,967,724.40 and 400,858,892.40

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Solution

The fourth proportional to 400,858,892.40, 561,967,724.40 and 400,858,892.40 is: 561,967,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,858,892.40 : 561,967,724.40 = 400,858,892.40 : x
  2. Step 2: Convert to fraction form
    400,858,892.40/561,967,724.40 = 400,858,892.40/x
  3. Step 3: Cross multiply
    400,858,892.40x = 561,967,724.40 × 400,858,892.40
  4. Step 4: Simplify right side
    400,858,892.40x = 225,269,759,567,532,416
  5. Step 5: Solve for x
    x = 225,269,759,567,532,416/400,858,892.40
  6. Step 6: Final answer
    x = 561,967,724.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.