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Finding the Fourth Proportional to 70,343.90, 97,077.03 and 38,513.02

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Solution

The fourth proportional to 70,343.90, 97,077.03 and 38,513.02 is: 53,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,343.90 : 97,077.03 = 38,513.02 : x
  2. Step 2: Convert to fraction form
    70,343.90/97,077.03 = 38,513.02/x
  3. Step 3: Cross multiply
    70,343.90x = 97,077.03 × 38,513.02
  4. Step 4: Simplify right side
    70,343.90x = 3,738,728,919.98
  5. Step 5: Solve for x
    x = 3,738,728,919.98/70,343.90
  6. Step 6: Final answer
    x = 53,149.30

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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.