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Finding the Fourth Proportional to 114,618.80, 171,928.20 and 112,869.20

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Solution

The fourth proportional to 114,618.80, 171,928.20 and 112,869.20 is: 169,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,618.80 : 171,928.20 = 112,869.20 : x
  2. Step 2: Convert to fraction form
    114,618.80/171,928.20 = 112,869.20/x
  3. Step 3: Cross multiply
    114,618.80x = 171,928.20 × 112,869.20
  4. Step 4: Simplify right side
    114,618.80x = 19,405,398,391.44
  5. Step 5: Solve for x
    x = 19,405,398,391.44/114,618.80
  6. Step 6: Final answer
    x = 169,303.80

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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.