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Finding the Fourth Proportional to 112,632.78, 168,808.84 and 98,559.44

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Solution

The fourth proportional to 112,632.78, 168,808.84 and 98,559.44 is: 147,716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,632.78 : 168,808.84 = 98,559.44 : x
  2. Step 2: Convert to fraction form
    112,632.78/168,808.84 = 98,559.44/x
  3. Step 3: Cross multiply
    112,632.78x = 168,808.84 × 98,559.44
  4. Step 4: Simplify right side
    112,632.78x = 16,637,704,737.45
  5. Step 5: Solve for x
    x = 16,637,704,737.45/112,632.78
  6. Step 6: Final answer
    x = 147,716.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.