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Finding the Fourth Proportional to 61,858.72, 92,742.64 and 19,714.54

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Solution

The fourth proportional to 61,858.72, 92,742.64 and 19,714.54 is: 29,557.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,858.72 : 92,742.64 = 19,714.54 : x
  2. Step 2: Convert to fraction form
    61,858.72/92,742.64 = 19,714.54/x
  3. Step 3: Cross multiply
    61,858.72x = 92,742.64 × 19,714.54
  4. Step 4: Simplify right side
    61,858.72x = 1,828,378,485.99
  5. Step 5: Solve for x
    x = 1,828,378,485.99/61,858.72
  6. Step 6: Final answer
    x = 29,557.33

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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.