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Finding the Fourth Proportional to 66,491.10, 99,741.15 and 27,048.90

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Solution

The fourth proportional to 66,491.10, 99,741.15 and 27,048.90 is: 40,575.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,491.10 : 99,741.15 = 27,048.90 : x
  2. Step 2: Convert to fraction form
    66,491.10/99,741.15 = 27,048.90/x
  3. Step 3: Cross multiply
    66,491.10x = 99,741.15 × 27,048.90
  4. Step 4: Simplify right side
    66,491.10x = 2,697,888,392.24
  5. Step 5: Solve for x
    x = 2,697,888,392.24/66,491.10
  6. Step 6: Final answer
    x = 40,575.18

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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.