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Finding the Fourth Proportional to 61,137.30, 91,719.15 and 19,016.58

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Solution

The fourth proportional to 61,137.30, 91,719.15 and 19,016.58 is: 28,528.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,137.30 : 91,719.15 = 19,016.58 : x
  2. Step 2: Convert to fraction form
    61,137.30/91,719.15 = 19,016.58/x
  3. Step 3: Cross multiply
    61,137.30x = 91,719.15 × 19,016.58
  4. Step 4: Simplify right side
    61,137.30x = 1,744,184,553.51
  5. Step 5: Solve for x
    x = 1,744,184,553.51/61,137.30
  6. Step 6: Final answer
    x = 28,528.98

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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.