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Finding the Fourth Proportional to 611,793.60, 917,690.40 and 359,195.10

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Solution

The fourth proportional to 611,793.60, 917,690.40 and 359,195.10 is: 538,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,793.60 : 917,690.40 = 359,195.10 : x
  2. Step 2: Convert to fraction form
    611,793.60/917,690.40 = 359,195.10/x
  3. Step 3: Cross multiply
    611,793.60x = 917,690.40 × 359,195.10
  4. Step 4: Simplify right side
    611,793.60x = 329,629,894,997.04
  5. Step 5: Solve for x
    x = 329,629,894,997.04/611,793.60
  6. Step 6: Final answer
    x = 538,792.65

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Similar ratio
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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.