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Finding the Fourth Proportional to 92,820.72, 139,229.84 and 22,700.64

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Solution

The fourth proportional to 92,820.72, 139,229.84 and 22,700.64 is: 34,050.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,820.72 : 139,229.84 = 22,700.64 : x
  2. Step 2: Convert to fraction form
    92,820.72/139,229.84 = 22,700.64/x
  3. Step 3: Cross multiply
    92,820.72x = 139,229.84 × 22,700.64
  4. Step 4: Simplify right side
    92,820.72x = 3,160,606,475.10
  5. Step 5: Solve for x
    x = 3,160,606,475.10/92,820.72
  6. Step 6: Final answer
    x = 34,050.66

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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.