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Finding the Fourth Proportional to 199,600.70, 299,401.05 and 81,356.90

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Solution

The fourth proportional to 199,600.70, 299,401.05 and 81,356.90 is: 122,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,600.70 : 299,401.05 = 81,356.90 : x
  2. Step 2: Convert to fraction form
    199,600.70/299,401.05 = 81,356.90/x
  3. Step 3: Cross multiply
    199,600.70x = 299,401.05 × 81,356.90
  4. Step 4: Simplify right side
    199,600.70x = 24,358,341,284.75
  5. Step 5: Solve for x
    x = 24,358,341,284.75/199,600.70
  6. Step 6: Final answer
    x = 122,035.35

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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.