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Finding the Fourth Proportional to 79,658.56, 109,904.07 and 45,197.59

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Solution

The fourth proportional to 79,658.56, 109,904.07 and 45,197.59 is: 62,358.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,658.56 : 109,904.07 = 45,197.59 : x
  2. Step 2: Convert to fraction form
    79,658.56/109,904.07 = 45,197.59/x
  3. Step 3: Cross multiply
    79,658.56x = 109,904.07 × 45,197.59
  4. Step 4: Simplify right side
    79,658.56x = 4,967,399,095.19
  5. Step 5: Solve for x
    x = 4,967,399,095.19/79,658.56
  6. Step 6: Final answer
    x = 62,358.64

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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.