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Finding the Fourth Proportional to 118,661.56, 163,753.26 and 65,669.56

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Solution

The fourth proportional to 118,661.56, 163,753.26 and 65,669.56 is: 90,624.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,661.56 : 163,753.26 = 65,669.56 : x
  2. Step 2: Convert to fraction form
    118,661.56/163,753.26 = 65,669.56/x
  3. Step 3: Cross multiply
    118,661.56x = 163,753.26 × 65,669.56
  4. Step 4: Simplify right side
    118,661.56x = 10,753,604,532.77
  5. Step 5: Solve for x
    x = 10,753,604,532.77/118,661.56
  6. Step 6: Final answer
    x = 90,624.16

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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.