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Finding the Fourth Proportional to 66,482.75, 99,723.35 and 19,099.01

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Solution

The fourth proportional to 66,482.75, 99,723.35 and 19,099.01 is: 28,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,482.75 : 99,723.35 = 19,099.01 : x
  2. Step 2: Convert to fraction form
    66,482.75/99,723.35 = 19,099.01/x
  3. Step 3: Cross multiply
    66,482.75x = 99,723.35 × 19,099.01
  4. Step 4: Simplify right side
    66,482.75x = 1,904,616,808.01
  5. Step 5: Solve for x
    x = 1,904,616,808.01/66,482.75
  6. Step 6: Final answer
    x = 28,648.29

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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.