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Finding the Fourth Proportional to 812,125.60, 1,217,151.60 and 624,205.60

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Solution

The fourth proportional to 812,125.60, 1,217,151.60 and 624,205.60 is: 935,511.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,125.60 : 1,217,151.60 = 624,205.60 : x
  2. Step 2: Convert to fraction form
    812,125.60/1,217,151.60 = 624,205.60/x
  3. Step 3: Cross multiply
    812,125.60x = 1,217,151.60 × 624,205.60
  4. Step 4: Simplify right side
    812,125.60x = 759,752,844,768.96
  5. Step 5: Solve for x
    x = 759,752,844,768.96/812,125.60
  6. Step 6: Final answer
    x = 935,511.51

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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.