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Finding the Fourth Proportional to 92,989.69, 128,325.67 and 50,548.53

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Solution

The fourth proportional to 92,989.69, 128,325.67 and 50,548.53 is: 69,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,989.69 : 128,325.67 = 50,548.53 : x
  2. Step 2: Convert to fraction form
    92,989.69/128,325.67 = 50,548.53/x
  3. Step 3: Cross multiply
    92,989.69x = 128,325.67 × 50,548.53
  4. Step 4: Simplify right side
    92,989.69x = 6,486,673,979.77
  5. Step 5: Solve for x
    x = 6,486,673,979.77/92,989.69
  6. Step 6: Final answer
    x = 69,756.92

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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.