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Finding the Fourth Proportional to 65,856,266.50, 90,881,647.77 and 36,882,890.50

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Solution

The fourth proportional to 65,856,266.50, 90,881,647.77 and 36,882,890.50 is: 50,898,388.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,856,266.50 : 90,881,647.77 = 36,882,890.50 : x
  2. Step 2: Convert to fraction form
    65,856,266.50/90,881,647.77 = 36,882,890.50/x
  3. Step 3: Cross multiply
    65,856,266.50x = 90,881,647.77 × 36,882,890.50
  4. Step 4: Simplify right side
    65,856,266.50x = 3,351,977,863,160,479
  5. Step 5: Solve for x
    x = 3,351,977,863,160,479/65,856,266.50
  6. Step 6: Final answer
    x = 50,898,388.89

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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.