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Finding the Fourth Proportional to 217,137,664.40, 325,675,003.80 and 63,767,728.40

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Solution

The fourth proportional to 217,137,664.40, 325,675,003.80 and 63,767,728.40 is: 95,642,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,137,664.40 : 325,675,003.80 = 63,767,728.40 : x
  2. Step 2: Convert to fraction form
    217,137,664.40/325,675,003.80 = 63,767,728.40/x
  3. Step 3: Cross multiply
    217,137,664.40x = 325,675,003.80 × 63,767,728.40
  4. Step 4: Simplify right side
    217,137,664.40x = 20,767,555,188,987,368
  5. Step 5: Solve for x
    x = 20,767,555,188,987,368/217,137,664.40
  6. Step 6: Final answer
    x = 95,642,343.98

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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.