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Finding the Fourth Proportional to 66,258.86, 91,474.96 and 43,663.52

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Solution

The fourth proportional to 66,258.86, 91,474.96 and 43,663.52 is: 60,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,258.86 : 91,474.96 = 43,663.52 : x
  2. Step 2: Convert to fraction form
    66,258.86/91,474.96 = 43,663.52/x
  3. Step 3: Cross multiply
    66,258.86x = 91,474.96 × 43,663.52
  4. Step 4: Simplify right side
    66,258.86x = 3,994,118,745.46
  5. Step 5: Solve for x
    x = 3,994,118,745.46/66,258.86
  6. Step 6: Final answer
    x = 60,280.52

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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.