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Finding the Fourth Proportional to 70,070.62, 96,672.18 and 53,942.88

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Solution

The fourth proportional to 70,070.62, 96,672.18 and 53,942.88 is: 74,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,070.62 : 96,672.18 = 53,942.88 : x
  2. Step 2: Convert to fraction form
    70,070.62/96,672.18 = 53,942.88/x
  3. Step 3: Cross multiply
    70,070.62x = 96,672.18 × 53,942.88
  4. Step 4: Simplify right side
    70,070.62x = 5,214,775,805.08
  5. Step 5: Solve for x
    x = 5,214,775,805.08/70,070.62
  6. Step 6: Final answer
    x = 74,421.72

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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.