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Finding the Fourth Proportional to 61,856.60, 92,979.30 and 60,690.20

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Solution

The fourth proportional to 61,856.60, 92,979.30 and 60,690.20 is: 91,226.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,856.60 : 92,979.30 = 60,690.20 : x
  2. Step 2: Convert to fraction form
    61,856.60/92,979.30 = 60,690.20/x
  3. Step 3: Cross multiply
    61,856.60x = 92,979.30 × 60,690.20
  4. Step 4: Simplify right side
    61,856.60x = 5,642,932,312.86
  5. Step 5: Solve for x
    x = 5,642,932,312.86/61,856.60
  6. Step 6: Final answer
    x = 91,226.03

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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.