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Finding the Fourth Proportional to 964,709.80, 1,445,639.10 and 699,029.80

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Solution

The fourth proportional to 964,709.80, 1,445,639.10 and 699,029.80 is: 1,047,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    964,709.80 : 1,445,639.10 = 699,029.80 : x
  2. Step 2: Convert to fraction form
    964,709.80/1,445,639.10 = 699,029.80/x
  3. Step 3: Cross multiply
    964,709.80x = 1,445,639.10 × 699,029.80
  4. Step 4: Simplify right side
    964,709.80x = 1,010,544,810,945.18
  5. Step 5: Solve for x
    x = 1,010,544,810,945.18/964,709.80
  6. Step 6: Final answer
    x = 1,047,511.71

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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.