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Finding the Fourth Proportional to 611,662.20, 917,639.10 and 295,859.40

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Solution

The fourth proportional to 611,662.20, 917,639.10 and 295,859.40 is: 443,859.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,662.20 : 917,639.10 = 295,859.40 : x
  2. Step 2: Convert to fraction form
    611,662.20/917,639.10 = 295,859.40/x
  3. Step 3: Cross multiply
    611,662.20x = 917,639.10 × 295,859.40
  4. Step 4: Simplify right side
    611,662.20x = 271,492,153,542.54
  5. Step 5: Solve for x
    x = 271,492,153,542.54/611,662.20
  6. Step 6: Final answer
    x = 443,859.62

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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.