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Finding the Fourth Proportional to 68,683.92, 94,785.90 and 38,469.16

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Solution

The fourth proportional to 68,683.92, 94,785.90 and 38,469.16 is: 53,088.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,683.92 : 94,785.90 = 38,469.16 : x
  2. Step 2: Convert to fraction form
    68,683.92/94,785.90 = 38,469.16/x
  3. Step 3: Cross multiply
    68,683.92x = 94,785.90 × 38,469.16
  4. Step 4: Simplify right side
    68,683.92x = 3,646,333,952.84
  5. Step 5: Solve for x
    x = 3,646,333,952.84/68,683.92
  6. Step 6: Final answer
    x = 53,088.61

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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.