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Finding the Fourth Proportional to 219,720.01, 303,221.78 and 124,221.01

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Solution

The fourth proportional to 219,720.01, 303,221.78 and 124,221.01 is: 171,429.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,720.01 : 303,221.78 = 124,221.01 : x
  2. Step 2: Convert to fraction form
    219,720.01/303,221.78 = 124,221.01/x
  3. Step 3: Cross multiply
    219,720.01x = 303,221.78 × 124,221.01
  4. Step 4: Simplify right side
    219,720.01x = 37,666,515,765.60
  5. Step 5: Solve for x
    x = 37,666,515,765.60/219,720.01
  6. Step 6: Final answer
    x = 171,429.61

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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.