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Finding the Fourth Proportional to 91,745.66, 126,579.12 and 53,496.56

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Solution

The fourth proportional to 91,745.66, 126,579.12 and 53,496.56 is: 73,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,745.66 : 126,579.12 = 53,496.56 : x
  2. Step 2: Convert to fraction form
    91,745.66/126,579.12 = 53,496.56/x
  3. Step 3: Cross multiply
    91,745.66x = 126,579.12 × 53,496.56
  4. Step 4: Simplify right side
    91,745.66x = 6,771,547,487.83
  5. Step 5: Solve for x
    x = 6,771,547,487.83/91,745.66
  6. Step 6: Final answer
    x = 73,807.82

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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.