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Finding the Fourth Proportional to 92,992.40, 128,328 and 50,552

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Solution

The fourth proportional to 92,992.40, 128,328 and 50,552 is: 69,760.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.40 : 128,328 = 50,552 : x
  2. Step 2: Convert to fraction form
    92,992.40/128,328 = 50,552/x
  3. Step 3: Cross multiply
    92,992.40x = 128,328 × 50,552
  4. Step 4: Simplify right side
    92,992.40x = 6,487,237,056
  5. Step 5: Solve for x
    x = 6,487,237,056/92,992.40
  6. Step 6: Final answer
    x = 69,760.94

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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.