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Finding the Fourth Proportional to 70,857.40, 97,790.12 and 52,921.27

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Solution

The fourth proportional to 70,857.40, 97,790.12 and 52,921.27 is: 73,036.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,857.40 : 97,790.12 = 52,921.27 : x
  2. Step 2: Convert to fraction form
    70,857.40/97,790.12 = 52,921.27/x
  3. Step 3: Cross multiply
    70,857.40x = 97,790.12 × 52,921.27
  4. Step 4: Simplify right side
    70,857.40x = 5,175,177,343.85
  5. Step 5: Solve for x
    x = 5,175,177,343.85/70,857.40
  6. Step 6: Final answer
    x = 73,036.51

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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.