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Finding the Fourth Proportional to 61,788.64, 92,608.80 and 28,462.96

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Solution

The fourth proportional to 61,788.64, 92,608.80 and 28,462.96 is: 42,660.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,788.64 : 92,608.80 = 28,462.96 : x
  2. Step 2: Convert to fraction form
    61,788.64/92,608.80 = 28,462.96/x
  3. Step 3: Cross multiply
    61,788.64x = 92,608.80 × 28,462.96
  4. Step 4: Simplify right side
    61,788.64x = 2,635,920,570.05
  5. Step 5: Solve for x
    x = 2,635,920,570.05/61,788.64
  6. Step 6: Final answer
    x = 42,660.28

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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.