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Finding the Fourth Proportional to 118,696.60, 163,801.02 and 64,981.14

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Solution

The fourth proportional to 118,696.60, 163,801.02 and 64,981.14 is: 89,673.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,696.60 : 163,801.02 = 64,981.14 : x
  2. Step 2: Convert to fraction form
    118,696.60/163,801.02 = 64,981.14/x
  3. Step 3: Cross multiply
    118,696.60x = 163,801.02 × 64,981.14
  4. Step 4: Simplify right side
    118,696.60x = 10,643,977,012.76
  5. Step 5: Solve for x
    x = 10,643,977,012.76/118,696.60
  6. Step 6: Final answer
    x = 89,673.82

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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.