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Finding the Fourth Proportional to 65,794,628.40, 98,691,942.60 and 64,660,887.60

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Solution

The fourth proportional to 65,794,628.40, 98,691,942.60 and 64,660,887.60 is: 96,991,331.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,794,628.40 : 98,691,942.60 = 64,660,887.60 : x
  2. Step 2: Convert to fraction form
    65,794,628.40/98,691,942.60 = 64,660,887.60/x
  3. Step 3: Cross multiply
    65,794,628.40x = 98,691,942.60 × 64,660,887.60
  4. Step 4: Simplify right side
    65,794,628.40x = 6,381,508,607,484,252
  5. Step 5: Solve for x
    x = 6,381,508,607,484,252/65,794,628.40
  6. Step 6: Final answer
    x = 96,991,331.40

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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.