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Finding the Fourth Proportional to 92,915.01, 128,213.82 and 52,621.02

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Solution

The fourth proportional to 92,915.01, 128,213.82 and 52,621.02 is: 72,611.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,915.01 : 128,213.82 = 52,621.02 : x
  2. Step 2: Convert to fraction form
    92,915.01/128,213.82 = 52,621.02/x
  3. Step 3: Cross multiply
    92,915.01x = 128,213.82 × 52,621.02
  4. Step 4: Simplify right side
    92,915.01x = 6,746,741,986.50
  5. Step 5: Solve for x
    x = 6,746,741,986.50/92,915.01
  6. Step 6: Final answer
    x = 72,611.97

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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.