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Finding the Fourth Proportional to 225,709.10, 338,607.91 and 83,555.47

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Solution

The fourth proportional to 225,709.10, 338,607.91 and 83,555.47 is: 125,349.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,709.10 : 338,607.91 = 83,555.47 : x
  2. Step 2: Convert to fraction form
    225,709.10/338,607.91 = 83,555.47/x
  3. Step 3: Cross multiply
    225,709.10x = 338,607.91 × 83,555.47
  4. Step 4: Simplify right side
    225,709.10x = 28,292,542,647.99
  5. Step 5: Solve for x
    x = 28,292,542,647.99/225,709.10
  6. Step 6: Final answer
    x = 125,349.59

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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.