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Finding the Fourth Proportional to 66,429.30, 99,643.95 and 27,014.70

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Solution

The fourth proportional to 66,429.30, 99,643.95 and 27,014.70 is: 40,522.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429.30 : 99,643.95 = 27,014.70 : x
  2. Step 2: Convert to fraction form
    66,429.30/99,643.95 = 27,014.70/x
  3. Step 3: Cross multiply
    66,429.30x = 99,643.95 × 27,014.70
  4. Step 4: Simplify right side
    66,429.30x = 2,691,851,416.07
  5. Step 5: Solve for x
    x = 2,691,851,416.07/66,429.30
  6. Step 6: Final answer
    x = 40,522.05

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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.