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Finding the Fourth Proportional to 92,965.72, 139,448.62 and 61,368.38

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Solution

The fourth proportional to 92,965.72, 139,448.62 and 61,368.38 is: 92,052.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,965.72 : 139,448.62 = 61,368.38 : x
  2. Step 2: Convert to fraction form
    92,965.72/139,448.62 = 61,368.38/x
  3. Step 3: Cross multiply
    92,965.72x = 139,448.62 × 61,368.38
  4. Step 4: Simplify right side
    92,965.72x = 8,557,735,902.64
  5. Step 5: Solve for x
    x = 8,557,735,902.64/92,965.72
  6. Step 6: Final answer
    x = 92,052.60

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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.