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Finding the Fourth Proportional to 172,597.20, 238,061.44 and 115,207.59

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Solution

The fourth proportional to 172,597.20, 238,061.44 and 115,207.59 is: 158,904.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,597.20 : 238,061.44 = 115,207.59 : x
  2. Step 2: Convert to fraction form
    172,597.20/238,061.44 = 115,207.59/x
  3. Step 3: Cross multiply
    172,597.20x = 238,061.44 × 115,207.59
  4. Step 4: Simplify right side
    172,597.20x = 27,426,484,774.33
  5. Step 5: Solve for x
    x = 27,426,484,774.33/172,597.20
  6. Step 6: Final answer
    x = 158,904.58

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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.