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Finding the Fourth Proportional to 68,082.61, 93,915.66 and 40,851.65

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Solution

The fourth proportional to 68,082.61, 93,915.66 and 40,851.65 is: 56,352.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,082.61 : 93,915.66 = 40,851.65 : x
  2. Step 2: Convert to fraction form
    68,082.61/93,915.66 = 40,851.65/x
  3. Step 3: Cross multiply
    68,082.61x = 93,915.66 × 40,851.65
  4. Step 4: Simplify right side
    68,082.61x = 3,836,609,671.84
  5. Step 5: Solve for x
    x = 3,836,609,671.84/68,082.61
  6. Step 6: Final answer
    x = 56,352.27

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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.