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Finding the Fourth Proportional to 76,163.92, 105,117.82 and 47,488.26

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Solution

The fourth proportional to 76,163.92, 105,117.82 and 47,488.26 is: 65,541.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,163.92 : 105,117.82 = 47,488.26 : x
  2. Step 2: Convert to fraction form
    76,163.92/105,117.82 = 47,488.26/x
  3. Step 3: Cross multiply
    76,163.92x = 105,117.82 × 47,488.26
  4. Step 4: Simplify right side
    76,163.92x = 4,991,862,366.79
  5. Step 5: Solve for x
    x = 4,991,862,366.79/76,163.92
  6. Step 6: Final answer
    x = 65,541.04

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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.