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Finding the Fourth Proportional to 61,530.42, 92,310.03 and 19,977.42

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Solution

The fourth proportional to 61,530.42, 92,310.03 and 19,977.42 is: 29,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,530.42 : 92,310.03 = 19,977.42 : x
  2. Step 2: Convert to fraction form
    61,530.42/92,310.03 = 19,977.42/x
  3. Step 3: Cross multiply
    61,530.42x = 92,310.03 × 19,977.42
  4. Step 4: Simplify right side
    61,530.42x = 1,844,116,239.52
  5. Step 5: Solve for x
    x = 1,844,116,239.52/61,530.42
  6. Step 6: Final answer
    x = 29,970.81

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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.