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Finding the Fourth Proportional to 61,486.47, 84,672.66 and 53,416.44

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Solution

The fourth proportional to 61,486.47, 84,672.66 and 53,416.44 is: 73,559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,486.47 : 84,672.66 = 53,416.44 : x
  2. Step 2: Convert to fraction form
    61,486.47/84,672.66 = 53,416.44/x
  3. Step 3: Cross multiply
    61,486.47x = 84,672.66 × 53,416.44
  4. Step 4: Simplify right side
    61,486.47x = 4,522,912,062.53
  5. Step 5: Solve for x
    x = 4,522,912,062.53/61,486.47
  6. Step 6: Final answer
    x = 73,559.47

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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.