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Finding the Fourth Proportional to 68,211.64, 94,131.90 and 47,823.64

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Solution

The fourth proportional to 68,211.64, 94,131.90 and 47,823.64 is: 65,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,211.64 : 94,131.90 = 47,823.64 : x
  2. Step 2: Convert to fraction form
    68,211.64/94,131.90 = 47,823.64/x
  3. Step 3: Cross multiply
    68,211.64x = 94,131.90 × 47,823.64
  4. Step 4: Simplify right side
    68,211.64x = 4,501,730,098.12
  5. Step 5: Solve for x
    x = 4,501,730,098.12/68,211.64
  6. Step 6: Final answer
    x = 65,996.51

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1.5x scale

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.