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Finding the Fourth Proportional to 223,801.21, 308,257.34 and 172,019.28

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Solution

The fourth proportional to 223,801.21, 308,257.34 and 172,019.28 is: 236,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,801.21 : 308,257.34 = 172,019.28 : x
  2. Step 2: Convert to fraction form
    223,801.21/308,257.34 = 172,019.28/x
  3. Step 3: Cross multiply
    223,801.21x = 308,257.34 × 172,019.28
  4. Step 4: Simplify right side
    223,801.21x = 53,026,204,727.24
  5. Step 5: Solve for x
    x = 53,026,204,727.24/223,801.21
  6. Step 6: Final answer
    x = 236,934.40

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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.