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Finding the Fourth Proportional to 79,296.96, 109,419.72 and 45,307.65

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Solution

The fourth proportional to 79,296.96, 109,419.72 and 45,307.65 is: 62,518.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,296.96 : 109,419.72 = 45,307.65 : x
  2. Step 2: Convert to fraction form
    79,296.96/109,419.72 = 45,307.65/x
  3. Step 3: Cross multiply
    79,296.96x = 109,419.72 × 45,307.65
  4. Step 4: Simplify right side
    79,296.96x = 4,957,550,001.79
  5. Step 5: Solve for x
    x = 4,957,550,001.79/79,296.96
  6. Step 6: Final answer
    x = 62,518.79

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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.