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Finding the Fourth Proportional to 70,872.80, 97,790.04 and 53,872.52

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Solution

The fourth proportional to 70,872.80, 97,790.04 and 53,872.52 is: 74,333.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,872.80 : 97,790.04 = 53,872.52 : x
  2. Step 2: Convert to fraction form
    70,872.80/97,790.04 = 53,872.52/x
  3. Step 3: Cross multiply
    70,872.80x = 97,790.04 × 53,872.52
  4. Step 4: Simplify right side
    70,872.80x = 5,268,195,885.70
  5. Step 5: Solve for x
    x = 5,268,195,885.70/70,872.80
  6. Step 6: Final answer
    x = 74,333.11

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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.