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Finding the Fourth Proportional to 647,535.20, 893,556.78 and 361,038.20

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Solution

The fourth proportional to 647,535.20, 893,556.78 and 361,038.20 is: 498,209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,535.20 : 893,556.78 = 361,038.20 : x
  2. Step 2: Convert to fraction form
    647,535.20/893,556.78 = 361,038.20/x
  3. Step 3: Cross multiply
    647,535.20x = 893,556.78 × 361,038.20
  4. Step 4: Simplify right side
    647,535.20x = 322,608,131,449.00
  5. Step 5: Solve for x
    x = 322,608,131,449.00/647,535.20
  6. Step 6: Final answer
    x = 498,209.41

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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.