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Finding the Fourth Proportional to 123,953.91, 171,056.54 and 67,365.28

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Solution

The fourth proportional to 123,953.91, 171,056.54 and 67,365.28 is: 92,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,953.91 : 171,056.54 = 67,365.28 : x
  2. Step 2: Convert to fraction form
    123,953.91/171,056.54 = 67,365.28/x
  3. Step 3: Cross multiply
    123,953.91x = 171,056.54 × 67,365.28
  4. Step 4: Simplify right side
    123,953.91x = 11,523,272,095.17
  5. Step 5: Solve for x
    x = 11,523,272,095.17/123,953.91
  6. Step 6: Final answer
    x = 92,964.17

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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.