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Finding the Fourth Proportional to 112,461.80, 168,584.70 and 65,028.20

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Solution

The fourth proportional to 112,461.80, 168,584.70 and 65,028.20 is: 97,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,461.80 : 168,584.70 = 65,028.20 : x
  2. Step 2: Convert to fraction form
    112,461.80/168,584.70 = 65,028.20/x
  3. Step 3: Cross multiply
    112,461.80x = 168,584.70 × 65,028.20
  4. Step 4: Simplify right side
    112,461.80x = 10,962,759,588.54
  5. Step 5: Solve for x
    x = 10,962,759,588.54/112,461.80
  6. Step 6: Final answer
    x = 97,479.85

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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.