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Finding the Fourth Proportional to 118,696.22, 163,804.65 and 64,981.22

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Solution

The fourth proportional to 118,696.22, 163,804.65 and 64,981.22 is: 89,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,696.22 : 163,804.65 = 64,981.22 : x
  2. Step 2: Convert to fraction form
    118,696.22/163,804.65 = 64,981.22/x
  3. Step 3: Cross multiply
    118,696.22x = 163,804.65 × 64,981.22
  4. Step 4: Simplify right side
    118,696.22x = 10,644,225,998.67
  5. Step 5: Solve for x
    x = 10,644,225,998.67/118,696.22
  6. Step 6: Final answer
    x = 89,676.20

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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.