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Finding the Fourth Proportional to 64,712.72, 97,078.62 and 33,140.62

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Solution

The fourth proportional to 64,712.72, 97,078.62 and 33,140.62 is: 49,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,712.72 : 97,078.62 = 33,140.62 : x
  2. Step 2: Convert to fraction form
    64,712.72/97,078.62 = 33,140.62/x
  3. Step 3: Cross multiply
    64,712.72x = 97,078.62 × 33,140.62
  4. Step 4: Simplify right side
    64,712.72x = 3,217,245,655.54
  5. Step 5: Solve for x
    x = 3,217,245,655.54/64,712.72
  6. Step 6: Final answer
    x = 49,715.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.