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Finding the Fourth Proportional to 79,039.52, 109,114.16 and 61,093.92

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Solution

The fourth proportional to 79,039.52, 109,114.16 and 61,093.92 is: 84,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,039.52 : 109,114.16 = 61,093.92 : x
  2. Step 2: Convert to fraction form
    79,039.52/109,114.16 = 61,093.92/x
  3. Step 3: Cross multiply
    79,039.52x = 109,114.16 × 61,093.92
  4. Step 4: Simplify right side
    79,039.52x = 6,666,211,761.91
  5. Step 5: Solve for x
    x = 6,666,211,761.91/79,039.52
  6. Step 6: Final answer
    x = 84,340.24

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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.