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Finding the Fourth Proportional to 124,753.61, 172,159.97 and 68,164.98

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Solution

The fourth proportional to 124,753.61, 172,159.97 and 68,164.98 is: 94,067.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,753.61 : 172,159.97 = 68,164.98 : x
  2. Step 2: Convert to fraction form
    124,753.61/172,159.97 = 68,164.98/x
  3. Step 3: Cross multiply
    124,753.61x = 172,159.97 × 68,164.98
  4. Step 4: Simplify right side
    124,753.61x = 11,735,281,953.17
  5. Step 5: Solve for x
    x = 11,735,281,953.17/124,753.61
  6. Step 6: Final answer
    x = 94,067.67

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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.