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Finding the Fourth Proportional to 121,697.90, 182,615.58 and 65,536.82

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Solution

The fourth proportional to 121,697.90, 182,615.58 and 65,536.82 is: 98,342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,697.90 : 182,615.58 = 65,536.82 : x
  2. Step 2: Convert to fraction form
    121,697.90/182,615.58 = 65,536.82/x
  3. Step 3: Cross multiply
    121,697.90x = 182,615.58 × 65,536.82
  4. Step 4: Simplify right side
    121,697.90x = 11,968,044,395.66
  5. Step 5: Solve for x
    x = 11,968,044,395.66/121,697.90
  6. Step 6: Final answer
    x = 98,342.24

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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.