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Finding the Fourth Proportional to 147,052.80, 220,579.20 and 99,813.60

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Solution

The fourth proportional to 147,052.80, 220,579.20 and 99,813.60 is: 149,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,052.80 : 220,579.20 = 99,813.60 : x
  2. Step 2: Convert to fraction form
    147,052.80/220,579.20 = 99,813.60/x
  3. Step 3: Cross multiply
    147,052.80x = 220,579.20 × 99,813.60
  4. Step 4: Simplify right side
    147,052.80x = 22,016,804,037.12
  5. Step 5: Solve for x
    x = 22,016,804,037.12/147,052.80
  6. Step 6: Final answer
    x = 149,720.40

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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.