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Finding the Fourth Proportional to 290,776.80, 435,465.34 and 196,998.24

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Solution

The fourth proportional to 290,776.80, 435,465.34 and 196,998.24 is: 295,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,776.80 : 435,465.34 = 196,998.24 : x
  2. Step 2: Convert to fraction form
    290,776.80/435,465.34 = 196,998.24/x
  3. Step 3: Cross multiply
    290,776.80x = 435,465.34 × 196,998.24
  4. Step 4: Simplify right side
    290,776.80x = 85,785,905,561.00
  5. Step 5: Solve for x
    x = 85,785,905,561.00/290,776.80
  6. Step 6: Final answer
    x = 295,023.21

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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.