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Finding the Fourth Proportional to 220,712.34, 331,071.53 and 62,940.77

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Solution

The fourth proportional to 220,712.34, 331,071.53 and 62,940.77 is: 94,412.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,712.34 : 331,071.53 = 62,940.77 : x
  2. Step 2: Convert to fraction form
    220,712.34/331,071.53 = 62,940.77/x
  3. Step 3: Cross multiply
    220,712.34x = 331,071.53 × 62,940.77
  4. Step 4: Simplify right side
    220,712.34x = 20,837,897,023.28
  5. Step 5: Solve for x
    x = 20,837,897,023.28/220,712.34
  6. Step 6: Final answer
    x = 94,412.02

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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.