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Finding the Fourth Proportional to 66,962.64, 100,443.96 and 25,409.64

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Solution

The fourth proportional to 66,962.64, 100,443.96 and 25,409.64 is: 38,114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,962.64 : 100,443.96 = 25,409.64 : x
  2. Step 2: Convert to fraction form
    66,962.64/100,443.96 = 25,409.64/x
  3. Step 3: Cross multiply
    66,962.64x = 100,443.96 × 25,409.64
  4. Step 4: Simplify right side
    66,962.64x = 2,552,244,863.77
  5. Step 5: Solve for x
    x = 2,552,244,863.77/66,962.64
  6. Step 6: Final answer
    x = 38,114.46

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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.