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Finding the Fourth Proportional to 220,572.48, 304,421.58 and 123,786.66

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Solution

The fourth proportional to 220,572.48, 304,421.58 and 123,786.66 is: 170,843.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,572.48 : 304,421.58 = 123,786.66 : x
  2. Step 2: Convert to fraction form
    220,572.48/304,421.58 = 123,786.66/x
  3. Step 3: Cross multiply
    220,572.48x = 304,421.58 × 123,786.66
  4. Step 4: Simplify right side
    220,572.48x = 37,683,330,620.12
  5. Step 5: Solve for x
    x = 37,683,330,620.12/220,572.48
  6. Step 6: Final answer
    x = 170,843.30

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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.