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Finding the Fourth Proportional to 961,813.80, 1,327,064.58 and 621,873

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Solution

The fourth proportional to 961,813.80, 1,327,064.58 and 621,873 is: 858,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    961,813.80 : 1,327,064.58 = 621,873 : x
  2. Step 2: Convert to fraction form
    961,813.80/1,327,064.58 = 621,873/x
  3. Step 3: Cross multiply
    961,813.80x = 1,327,064.58 × 621,873
  4. Step 4: Simplify right side
    961,813.80x = 825,265,631,558.34
  5. Step 5: Solve for x
    x = 825,265,631,558.34/961,813.80
  6. Step 6: Final answer
    x = 858,030.56

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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.