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Finding the Fourth Proportional to 61,878.22, 92,660.32 and 51,856.62

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Solution

The fourth proportional to 61,878.22, 92,660.32 and 51,856.62 is: 77,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.22 : 92,660.32 = 51,856.62 : x
  2. Step 2: Convert to fraction form
    61,878.22/92,660.32 = 51,856.62/x
  3. Step 3: Cross multiply
    61,878.22x = 92,660.32 × 51,856.62
  4. Step 4: Simplify right side
    61,878.22x = 4,805,051,003.32
  5. Step 5: Solve for x
    x = 4,805,051,003.32/61,878.22
  6. Step 6: Final answer
    x = 77,653.35

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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.