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Finding the Fourth Proportional to 66,608.60, 99,916.72 and 25,055.96

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Solution

The fourth proportional to 66,608.60, 99,916.72 and 25,055.96 is: 37,585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,608.60 : 99,916.72 = 25,055.96 : x
  2. Step 2: Convert to fraction form
    66,608.60/99,916.72 = 25,055.96/x
  3. Step 3: Cross multiply
    66,608.60x = 99,916.72 × 25,055.96
  4. Step 4: Simplify right side
    66,608.60x = 2,503,509,339.65
  5. Step 5: Solve for x
    x = 2,503,509,339.65/66,608.60
  6. Step 6: Final answer
    x = 37,585.38

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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.