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Finding the Fourth Proportional to 491,296.60, 731,874.51 and 476,428.60

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Solution

The fourth proportional to 491,296.60, 731,874.51 and 476,428.60 is: 709,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,296.60 : 731,874.51 = 476,428.60 : x
  2. Step 2: Convert to fraction form
    491,296.60/731,874.51 = 476,428.60/x
  3. Step 3: Cross multiply
    491,296.60x = 731,874.51 × 476,428.60
  4. Step 4: Simplify right side
    491,296.60x = 348,685,948,174.99
  5. Step 5: Solve for x
    x = 348,685,948,174.99/491,296.60
  6. Step 6: Final answer
    x = 709,725.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.