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Finding the Fourth Proportional to 61,940.34, 85,474.17 and 35,089.47

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Solution

The fourth proportional to 61,940.34, 85,474.17 and 35,089.47 is: 48,421.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,940.34 : 85,474.17 = 35,089.47 : x
  2. Step 2: Convert to fraction form
    61,940.34/85,474.17 = 35,089.47/x
  3. Step 3: Cross multiply
    61,940.34x = 85,474.17 × 35,089.47
  4. Step 4: Simplify right side
    61,940.34x = 2,999,243,323.99
  5. Step 5: Solve for x
    x = 2,999,243,323.99/61,940.34
  6. Step 6: Final answer
    x = 48,421.49

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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.