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Finding the Fourth Proportional to 147,856.80, 221,817.60 and 73,012.80

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Solution

The fourth proportional to 147,856.80, 221,817.60 and 73,012.80 is: 109,535.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,856.80 : 221,817.60 = 73,012.80 : x
  2. Step 2: Convert to fraction form
    147,856.80/221,817.60 = 73,012.80/x
  3. Step 3: Cross multiply
    147,856.80x = 221,817.60 × 73,012.80
  4. Step 4: Simplify right side
    147,856.80x = 16,195,524,065.28
  5. Step 5: Solve for x
    x = 16,195,524,065.28/147,856.80
  6. Step 6: Final answer
    x = 109,535.20

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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.