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Finding the Fourth Proportional to 84,689.52, 116,578.20 and 73,199.19

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Solution

The fourth proportional to 84,689.52, 116,578.20 and 73,199.19 is: 100,761.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,689.52 : 116,578.20 = 73,199.19 : x
  2. Step 2: Convert to fraction form
    84,689.52/116,578.20 = 73,199.19/x
  3. Step 3: Cross multiply
    84,689.52x = 116,578.20 × 73,199.19
  4. Step 4: Simplify right side
    84,689.52x = 8,533,430,523.32
  5. Step 5: Solve for x
    x = 8,533,430,523.32/84,689.52
  6. Step 6: Final answer
    x = 100,761.36

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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.