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Finding the Fourth Proportional to 261,987.33, 392,652.39 and 112,051.62

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Solution

The fourth proportional to 261,987.33, 392,652.39 and 112,051.62 is: 167,936.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,987.33 : 392,652.39 = 112,051.62 : x
  2. Step 2: Convert to fraction form
    261,987.33/392,652.39 = 112,051.62/x
  3. Step 3: Cross multiply
    261,987.33x = 392,652.39 × 112,051.62
  4. Step 4: Simplify right side
    261,987.33x = 43,997,336,396.37
  5. Step 5: Solve for x
    x = 43,997,336,396.37/261,987.33
  6. Step 6: Final answer
    x = 167,936.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.