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Finding the Fourth Proportional to 199,339.14, 299,059.20 and 66,220.05

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Solution

The fourth proportional to 199,339.14, 299,059.20 and 66,220.05 is: 99,346.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,339.14 : 299,059.20 = 66,220.05 : x
  2. Step 2: Convert to fraction form
    199,339.14/299,059.20 = 66,220.05/x
  3. Step 3: Cross multiply
    199,339.14x = 299,059.20 × 66,220.05
  4. Step 4: Simplify right side
    199,339.14x = 19,803,715,176.96
  5. Step 5: Solve for x
    x = 19,803,715,176.96/199,339.14
  6. Step 6: Final answer
    x = 99,346.85

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1.5x scale

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.