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Finding the Fourth Proportional to 99,200.39, 136,897.53 and 53,878.80

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Solution

The fourth proportional to 99,200.39, 136,897.53 and 53,878.80 is: 74,353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,200.39 : 136,897.53 = 53,878.80 : x
  2. Step 2: Convert to fraction form
    99,200.39/136,897.53 = 53,878.80/x
  3. Step 3: Cross multiply
    99,200.39x = 136,897.53 × 53,878.80
  4. Step 4: Simplify right side
    99,200.39x = 7,375,874,639.36
  5. Step 5: Solve for x
    x = 7,375,874,639.36/99,200.39
  6. Step 6: Final answer
    x = 74,353.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.