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Finding the Fourth Proportional to 65,843,907.80, 98,765,861.70 and 29,942,115.80

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Solution

The fourth proportional to 65,843,907.80, 98,765,861.70 and 29,942,115.80 is: 44,913,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,843,907.80 : 98,765,861.70 = 29,942,115.80 : x
  2. Step 2: Convert to fraction form
    65,843,907.80/98,765,861.70 = 29,942,115.80/x
  3. Step 3: Cross multiply
    65,843,907.80x = 98,765,861.70 × 29,942,115.80
  4. Step 4: Simplify right side
    65,843,907.80x = 2,957,258,868,108,185
  5. Step 5: Solve for x
    x = 2,957,258,868,108,185/65,843,907.80
  6. Step 6: Final answer
    x = 44,913,173.70

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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.