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Finding the Fourth Proportional to 65,887.92, 90,863.08 and 43,246.54

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Solution

The fourth proportional to 65,887.92, 90,863.08 and 43,246.54 is: 59,639.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,887.92 : 90,863.08 = 43,246.54 : x
  2. Step 2: Convert to fraction form
    65,887.92/90,863.08 = 43,246.54/x
  3. Step 3: Cross multiply
    65,887.92x = 90,863.08 × 43,246.54
  4. Step 4: Simplify right side
    65,887.92x = 3,929,513,823.74
  5. Step 5: Solve for x
    x = 3,929,513,823.74/65,887.92
  6. Step 6: Final answer
    x = 59,639.37

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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.