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Finding the Fourth Proportional to 118,369.77, 163,349.21 and 64,654.78

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Solution

The fourth proportional to 118,369.77, 163,349.21 and 64,654.78 is: 89,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,369.77 : 163,349.21 = 64,654.78 : x
  2. Step 2: Convert to fraction form
    118,369.77/163,349.21 = 64,654.78/x
  3. Step 3: Cross multiply
    118,369.77x = 163,349.21 × 64,654.78
  4. Step 4: Simplify right side
    118,369.77x = 10,561,306,504.08
  5. Step 5: Solve for x
    x = 10,561,306,504.08/118,369.77
  6. Step 6: Final answer
    x = 89,223.00

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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.