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Finding the Fourth Proportional to 611,143.17, 843,364.89 and 339,195.12

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Solution

The fourth proportional to 611,143.17, 843,364.89 and 339,195.12 is: 468,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,143.17 : 843,364.89 = 339,195.12 : x
  2. Step 2: Convert to fraction form
    611,143.17/843,364.89 = 339,195.12/x
  3. Step 3: Cross multiply
    611,143.17x = 843,364.89 × 339,195.12
  4. Step 4: Simplify right side
    611,143.17x = 286,065,255,067.34
  5. Step 5: Solve for x
    x = 286,065,255,067.34/611,143.17
  6. Step 6: Final answer
    x = 468,082.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.