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Finding the Fourth Proportional to 61,272.59, 91,987.59 and 47,241.53

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Solution

The fourth proportional to 61,272.59, 91,987.59 and 47,241.53 is: 70,922.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,272.59 : 91,987.59 = 47,241.53 : x
  2. Step 2: Convert to fraction form
    61,272.59/91,987.59 = 47,241.53/x
  3. Step 3: Cross multiply
    61,272.59x = 91,987.59 × 47,241.53
  4. Step 4: Simplify right side
    61,272.59x = 4,345,634,377.63
  5. Step 5: Solve for x
    x = 4,345,634,377.63/61,272.59
  6. Step 6: Final answer
    x = 70,922.98

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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.