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Finding the Fourth Proportional to 70,899.21, 97,855.03 and 40,704.93

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Solution

The fourth proportional to 70,899.21, 97,855.03 and 40,704.93 is: 56,180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.21 : 97,855.03 = 40,704.93 : x
  2. Step 2: Convert to fraction form
    70,899.21/97,855.03 = 40,704.93/x
  3. Step 3: Cross multiply
    70,899.21x = 97,855.03 × 40,704.93
  4. Step 4: Simplify right side
    70,899.21x = 3,983,182,146.30
  5. Step 5: Solve for x
    x = 3,983,182,146.30/70,899.21
  6. Step 6: Final answer
    x = 56,180.91

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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.