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Finding the Fourth Proportional to 611,716.40, 844,140.06 and 339,801.80

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Solution

The fourth proportional to 611,716.40, 844,140.06 and 339,801.80 is: 468,910.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,716.40 : 844,140.06 = 339,801.80 : x
  2. Step 2: Convert to fraction form
    611,716.40/844,140.06 = 339,801.80/x
  3. Step 3: Cross multiply
    611,716.40x = 844,140.06 × 339,801.80
  4. Step 4: Simplify right side
    611,716.40x = 286,840,311,840.11
  5. Step 5: Solve for x
    x = 286,840,311,840.11/611,716.40
  6. Step 6: Final answer
    x = 468,910.61

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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.