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Finding the Fourth Proportional to 66,522.34, 91,798.54 and 39,651

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Solution

The fourth proportional to 66,522.34, 91,798.54 and 39,651 is: 54,717.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,522.34 : 91,798.54 = 39,651 : x
  2. Step 2: Convert to fraction form
    66,522.34/91,798.54 = 39,651/x
  3. Step 3: Cross multiply
    66,522.34x = 91,798.54 × 39,651
  4. Step 4: Simplify right side
    66,522.34x = 3,639,903,909.54
  5. Step 5: Solve for x
    x = 3,639,903,909.54/66,522.34
  6. Step 6: Final answer
    x = 54,717.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.