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Finding the Fourth Proportional to 119,900.80, 179,966.40 and 60,803.20

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Solution

The fourth proportional to 119,900.80, 179,966.40 and 60,803.20 is: 91,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,900.80 : 179,966.40 = 60,803.20 : x
  2. Step 2: Convert to fraction form
    119,900.80/179,966.40 = 60,803.20/x
  3. Step 3: Cross multiply
    119,900.80x = 179,966.40 × 60,803.20
  4. Step 4: Simplify right side
    119,900.80x = 10,942,533,012.48
  5. Step 5: Solve for x
    x = 10,942,533,012.48/119,900.80
  6. Step 6: Final answer
    x = 91,263.22

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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.