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Finding the Fourth Proportional to 61,657.70, 92,493.83 and 19,539.72

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Solution

The fourth proportional to 61,657.70, 92,493.83 and 19,539.72 is: 29,311.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,657.70 : 92,493.83 = 19,539.72 : x
  2. Step 2: Convert to fraction form
    61,657.70/92,493.83 = 19,539.72/x
  3. Step 3: Cross multiply
    61,657.70x = 92,493.83 × 19,539.72
  4. Step 4: Simplify right side
    61,657.70x = 1,807,303,442.23
  5. Step 5: Solve for x
    x = 1,807,303,442.23/61,657.70
  6. Step 6: Final answer
    x = 29,311.89

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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.