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Finding the Fourth Proportional to 106,696.80, 160,045.20 and 89,200.80

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Solution

The fourth proportional to 106,696.80, 160,045.20 and 89,200.80 is: 133,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,696.80 : 160,045.20 = 89,200.80 : x
  2. Step 2: Convert to fraction form
    106,696.80/160,045.20 = 89,200.80/x
  3. Step 3: Cross multiply
    106,696.80x = 160,045.20 × 89,200.80
  4. Step 4: Simplify right side
    106,696.80x = 14,276,159,876.16
  5. Step 5: Solve for x
    x = 14,276,159,876.16/106,696.80
  6. Step 6: Final answer
    x = 133,801.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.