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Finding the Fourth Proportional to 118,644.93, 163,729.98 and 64,929.96

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Solution

The fourth proportional to 118,644.93, 163,729.98 and 64,929.96 is: 89,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,644.93 : 163,729.98 = 64,929.96 : x
  2. Step 2: Convert to fraction form
    118,644.93/163,729.98 = 64,929.96/x
  3. Step 3: Cross multiply
    118,644.93x = 163,729.98 × 64,929.96
  4. Step 4: Simplify right side
    118,644.93x = 10,630,981,052.20
  5. Step 5: Solve for x
    x = 10,630,981,052.20/118,644.93
  6. Step 6: Final answer
    x = 89,603.33

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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.