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Finding the Fourth Proportional to 78,632.27, 117,850.04 and 61,926.32

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Solution

The fourth proportional to 78,632.27, 117,850.04 and 61,926.32 is: 92,812.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,632.27 : 117,850.04 = 61,926.32 : x
  2. Step 2: Convert to fraction form
    78,632.27/117,850.04 = 61,926.32/x
  3. Step 3: Cross multiply
    78,632.27x = 117,850.04 × 61,926.32
  4. Step 4: Simplify right side
    78,632.27x = 7,298,019,506.27
  5. Step 5: Solve for x
    x = 7,298,019,506.27/78,632.27
  6. Step 6: Final answer
    x = 92,812.02

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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.