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Finding the Fourth Proportional to 118,392.66, 163,379.19 and 64,677.91

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Solution

The fourth proportional to 118,392.66, 163,379.19 and 64,677.91 is: 89,254.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,392.66 : 163,379.19 = 64,677.91 : x
  2. Step 2: Convert to fraction form
    118,392.66/163,379.19 = 64,677.91/x
  3. Step 3: Cross multiply
    118,392.66x = 163,379.19 × 64,677.91
  4. Step 4: Simplify right side
    118,392.66x = 10,567,024,546.69
  5. Step 5: Solve for x
    x = 10,567,024,546.69/118,392.66
  6. Step 6: Final answer
    x = 89,254.06

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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.