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Finding the Fourth Proportional to 65,996,961.60, 99,089,920.80 and 37,299,147.60

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Solution

The fourth proportional to 65,996,961.60, 99,089,920.80 and 37,299,147.60 is: 56,002,117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,996,961.60 : 99,089,920.80 = 37,299,147.60 : x
  2. Step 2: Convert to fraction form
    65,996,961.60/99,089,920.80 = 37,299,147.60/x
  3. Step 3: Cross multiply
    65,996,961.60x = 99,089,920.80 × 37,299,147.60
  4. Step 4: Simplify right side
    65,996,961.60x = 3,695,969,581,591,510
  5. Step 5: Solve for x
    x = 3,695,969,581,591,510/65,996,961.60
  6. Step 6: Final answer
    x = 56,002,117.25

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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.