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Finding the Fourth Proportional to 66,456.92, 91,709.40 and 36,242.48

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Solution

The fourth proportional to 66,456.92, 91,709.40 and 36,242.48 is: 50,014.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,456.92 : 91,709.40 = 36,242.48 : x
  2. Step 2: Convert to fraction form
    66,456.92/91,709.40 = 36,242.48/x
  3. Step 3: Cross multiply
    66,456.92x = 91,709.40 × 36,242.48
  4. Step 4: Simplify right side
    66,456.92x = 3,323,776,095.31
  5. Step 5: Solve for x
    x = 3,323,776,095.31/66,456.92
  6. Step 6: Final answer
    x = 50,014.00

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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.