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Finding the Fourth Proportional to 92,975.78, 128,305.62 and 50,534.01

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Solution

The fourth proportional to 92,975.78, 128,305.62 and 50,534.01 is: 69,736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,975.78 : 128,305.62 = 50,534.01 : x
  2. Step 2: Convert to fraction form
    92,975.78/128,305.62 = 50,534.01/x
  3. Step 3: Cross multiply
    92,975.78x = 128,305.62 × 50,534.01
  4. Step 4: Simplify right side
    92,975.78x = 6,483,797,484.14
  5. Step 5: Solve for x
    x = 6,483,797,484.14/92,975.78
  6. Step 6: Final answer
    x = 69,736.41

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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.