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Finding the Fourth Proportional to 61,904.30, 92,856.45 and 61,321.10

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Solution

The fourth proportional to 61,904.30, 92,856.45 and 61,321.10 is: 91,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,904.30 : 92,856.45 = 61,321.10 : x
  2. Step 2: Convert to fraction form
    61,904.30/92,856.45 = 61,321.10/x
  3. Step 3: Cross multiply
    61,904.30x = 92,856.45 × 61,321.10
  4. Step 4: Simplify right side
    61,904.30x = 5,694,059,656.10
  5. Step 5: Solve for x
    x = 5,694,059,656.10/61,904.30
  6. Step 6: Final answer
    x = 91,981.65

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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.