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Finding the Fourth Proportional to 611,119.46, 843,338.48 and 339,189.71

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Solution

The fourth proportional to 611,119.46, 843,338.48 and 339,189.71 is: 468,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,119.46 : 843,338.48 = 339,189.71 : x
  2. Step 2: Convert to fraction form
    611,119.46/843,338.48 = 339,189.71/x
  3. Step 3: Cross multiply
    611,119.46x = 843,338.48 × 339,189.71
  4. Step 4: Simplify right side
    611,119.46x = 286,051,728,550.40
  5. Step 5: Solve for x
    x = 286,051,728,550.40/611,119.46
  6. Step 6: Final answer
    x = 468,078.25

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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.