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Finding the Fourth Proportional to 777,953.60, 1,166,930.40 and 620,489.60

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Solution

The fourth proportional to 777,953.60, 1,166,930.40 and 620,489.60 is: 930,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,953.60 : 1,166,930.40 = 620,489.60 : x
  2. Step 2: Convert to fraction form
    777,953.60/1,166,930.40 = 620,489.60/x
  3. Step 3: Cross multiply
    777,953.60x = 1,166,930.40 × 620,489.60
  4. Step 4: Simplify right side
    777,953.60x = 724,068,177,123.84
  5. Step 5: Solve for x
    x = 724,068,177,123.84/777,953.60
  6. Step 6: Final answer
    x = 930,734.40

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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.