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Finding the Fourth Proportional to 79,473.64, 119,232.78 and 64,645.48

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Solution

The fourth proportional to 79,473.64, 119,232.78 and 64,645.48 is: 96,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,473.64 : 119,232.78 = 64,645.48 : x
  2. Step 2: Convert to fraction form
    79,473.64/119,232.78 = 64,645.48/x
  3. Step 3: Cross multiply
    79,473.64x = 119,232.78 × 64,645.48
  4. Step 4: Simplify right side
    79,473.64x = 7,707,860,294.83
  5. Step 5: Solve for x
    x = 7,707,860,294.83/79,473.64
  6. Step 6: Final answer
    x = 96,986.38

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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.