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Finding the Fourth Proportional to 65,216.70, 97,943.85 and 57,051.90

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Solution

The fourth proportional to 65,216.70, 97,943.85 and 57,051.90 is: 85,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,216.70 : 97,943.85 = 57,051.90 : x
  2. Step 2: Convert to fraction form
    65,216.70/97,943.85 = 57,051.90/x
  3. Step 3: Cross multiply
    65,216.70x = 97,943.85 × 57,051.90
  4. Step 4: Simplify right side
    65,216.70x = 5,587,882,735.82
  5. Step 5: Solve for x
    x = 5,587,882,735.82/65,216.70
  6. Step 6: Final answer
    x = 85,681.78

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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.