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Finding the Fourth Proportional to 66,448.10, 99,672.15 and 41,872.10

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Solution

The fourth proportional to 66,448.10, 99,672.15 and 41,872.10 is: 62,808.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,448.10 : 99,672.15 = 41,872.10 : x
  2. Step 2: Convert to fraction form
    66,448.10/99,672.15 = 41,872.10/x
  3. Step 3: Cross multiply
    66,448.10x = 99,672.15 × 41,872.10
  4. Step 4: Simplify right side
    66,448.10x = 4,173,482,232.02
  5. Step 5: Solve for x
    x = 4,173,482,232.02/66,448.10
  6. Step 6: Final answer
    x = 62,808.15

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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.