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Finding the Fourth Proportional to 92,920.32, 139,656.96 and 43,706.88

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Solution

The fourth proportional to 92,920.32, 139,656.96 and 43,706.88 is: 65,690.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,920.32 : 139,656.96 = 43,706.88 : x
  2. Step 2: Convert to fraction form
    92,920.32/139,656.96 = 43,706.88/x
  3. Step 3: Cross multiply
    92,920.32x = 139,656.96 × 43,706.88
  4. Step 4: Simplify right side
    92,920.32x = 6,103,969,991.88
  5. Step 5: Solve for x
    x = 6,103,969,991.88/92,920.32
  6. Step 6: Final answer
    x = 65,690.37

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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.