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Finding the Fourth Proportional to 61,811.10, 92,716.65 and 57,663.90

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Solution

The fourth proportional to 61,811.10, 92,716.65 and 57,663.90 is: 86,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,811.10 : 92,716.65 = 57,663.90 : x
  2. Step 2: Convert to fraction form
    61,811.10/92,716.65 = 57,663.90/x
  3. Step 3: Cross multiply
    61,811.10x = 92,716.65 × 57,663.90
  4. Step 4: Simplify right side
    61,811.10x = 5,346,403,633.94
  5. Step 5: Solve for x
    x = 5,346,403,633.94/61,811.10
  6. Step 6: Final answer
    x = 86,495.85

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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.