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Finding the Fourth Proportional to 206,656.20, 309,911.40 and 94,390.20

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Solution

The fourth proportional to 206,656.20, 309,911.40 and 94,390.20 is: 141,552.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,656.20 : 309,911.40 = 94,390.20 : x
  2. Step 2: Convert to fraction form
    206,656.20/309,911.40 = 94,390.20/x
  3. Step 3: Cross multiply
    206,656.20x = 309,911.40 × 94,390.20
  4. Step 4: Simplify right side
    206,656.20x = 29,252,599,028.28
  5. Step 5: Solve for x
    x = 29,252,599,028.28/206,656.20
  6. Step 6: Final answer
    x = 141,552.00

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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.