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Finding the Fourth Proportional to 199,612.80, 299,419.20 and 104,806.35

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Solution

The fourth proportional to 199,612.80, 299,419.20 and 104,806.35 is: 157,209.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,612.80 : 299,419.20 = 104,806.35 : x
  2. Step 2: Convert to fraction form
    199,612.80/299,419.20 = 104,806.35/x
  3. Step 3: Cross multiply
    199,612.80x = 299,419.20 × 104,806.35
  4. Step 4: Simplify right side
    199,612.80x = 31,381,033,471.92
  5. Step 5: Solve for x
    x = 31,381,033,471.92/199,612.80
  6. Step 6: Final answer
    x = 157,209.53

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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.