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Finding the Fourth Proportional to 118,625.64, 163,703.38 and 64,910.65

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Solution

The fourth proportional to 118,625.64, 163,703.38 and 64,910.65 is: 89,576.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,625.64 : 163,703.38 = 64,910.65 : x
  2. Step 2: Convert to fraction form
    118,625.64/163,703.38 = 64,910.65/x
  3. Step 3: Cross multiply
    118,625.64x = 163,703.38 × 64,910.65
  4. Step 4: Simplify right side
    118,625.64x = 10,626,092,803.00
  5. Step 5: Solve for x
    x = 10,626,092,803.00/118,625.64
  6. Step 6: Final answer
    x = 89,576.70

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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.