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Finding the Fourth Proportional to 118,808.22, 163,955.34 and 65,095.28

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Solution

The fourth proportional to 118,808.22, 163,955.34 and 65,095.28 is: 89,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,808.22 : 163,955.34 = 65,095.28 : x
  2. Step 2: Convert to fraction form
    118,808.22/163,955.34 = 65,095.28/x
  3. Step 3: Cross multiply
    118,808.22x = 163,955.34 × 65,095.28
  4. Step 4: Simplify right side
    118,808.22x = 10,672,718,764.80
  5. Step 5: Solve for x
    x = 10,672,718,764.80/118,808.22
  6. Step 6: Final answer
    x = 89,831.48

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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.