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Finding the Fourth Proportional to 303,358.80, 455,038.20 and 125,847.30

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Solution

The fourth proportional to 303,358.80, 455,038.20 and 125,847.30 is: 188,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,358.80 : 455,038.20 = 125,847.30 : x
  2. Step 2: Convert to fraction form
    303,358.80/455,038.20 = 125,847.30/x
  3. Step 3: Cross multiply
    303,358.80x = 455,038.20 × 125,847.30
  4. Step 4: Simplify right side
    303,358.80x = 57,265,328,866.86
  5. Step 5: Solve for x
    x = 57,265,328,866.86/303,358.80
  6. Step 6: Final answer
    x = 188,770.95

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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.