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Finding the Fourth Proportional to 223,315.58, 308,189.28 and 127,820.09

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Solution

The fourth proportional to 223,315.58, 308,189.28 and 127,820.09 is: 176,399.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,315.58 : 308,189.28 = 127,820.09 : x
  2. Step 2: Convert to fraction form
    223,315.58/308,189.28 = 127,820.09/x
  3. Step 3: Cross multiply
    223,315.58x = 308,189.28 × 127,820.09
  4. Step 4: Simplify right side
    223,315.58x = 39,392,781,506.64
  5. Step 5: Solve for x
    x = 39,392,781,506.64/223,315.58
  6. Step 6: Final answer
    x = 176,399.61

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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.