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Finding the Fourth Proportional to 143,602.88, 198,198.54 and 83,173.50

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Solution

The fourth proportional to 143,602.88, 198,198.54 and 83,173.50 is: 114,794.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,602.88 : 198,198.54 = 83,173.50 : x
  2. Step 2: Convert to fraction form
    143,602.88/198,198.54 = 83,173.50/x
  3. Step 3: Cross multiply
    143,602.88x = 198,198.54 × 83,173.50
  4. Step 4: Simplify right side
    143,602.88x = 16,484,866,266.69
  5. Step 5: Solve for x
    x = 16,484,866,266.69/143,602.88
  6. Step 6: Final answer
    x = 114,794.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.