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Finding the Fourth Proportional to 118,716.13, 163,828.22 and 65,001.13

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Solution

The fourth proportional to 118,716.13, 163,828.22 and 65,001.13 is: 89,701.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,716.13 : 163,828.22 = 65,001.13 : x
  2. Step 2: Convert to fraction form
    118,716.13/163,828.22 = 65,001.13/x
  3. Step 3: Cross multiply
    118,716.13x = 163,828.22 × 65,001.13
  4. Step 4: Simplify right side
    118,716.13x = 10,649,019,978.48
  5. Step 5: Solve for x
    x = 10,649,019,978.48/118,716.13
  6. Step 6: Final answer
    x = 89,701.54

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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.