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Finding the Fourth Proportional to 61,886.85, 92,815.39 and 28,574.89

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Solution

The fourth proportional to 61,886.85, 92,815.39 and 28,574.89 is: 42,855.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,886.85 : 92,815.39 = 28,574.89 : x
  2. Step 2: Convert to fraction form
    61,886.85/92,815.39 = 28,574.89/x
  3. Step 3: Cross multiply
    61,886.85x = 92,815.39 × 28,574.89
  4. Step 4: Simplify right side
    61,886.85x = 2,652,189,559.56
  5. Step 5: Solve for x
    x = 2,652,189,559.56/61,886.85
  6. Step 6: Final answer
    x = 42,855.46

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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.