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Finding the Fourth Proportional to 432,385.08, 647,865.95 and 147,920.12

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Solution

The fourth proportional to 432,385.08, 647,865.95 and 147,920.12 is: 221,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,385.08 : 647,865.95 = 147,920.12 : x
  2. Step 2: Convert to fraction form
    432,385.08/647,865.95 = 147,920.12/x
  3. Step 3: Cross multiply
    432,385.08x = 647,865.95 × 147,920.12
  4. Step 4: Simplify right side
    432,385.08x = 95,832,412,410.80
  5. Step 5: Solve for x
    x = 95,832,412,410.80/432,385.08
  6. Step 6: Final answer
    x = 221,636.72

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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.