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Finding the Fourth Proportional to 92,761.51, 139,129.95 and 26,207.68

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Solution

The fourth proportional to 92,761.51, 139,129.95 and 26,207.68 is: 39,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,761.51 : 139,129.95 = 26,207.68 : x
  2. Step 2: Convert to fraction form
    92,761.51/139,129.95 = 26,207.68/x
  3. Step 3: Cross multiply
    92,761.51x = 139,129.95 × 26,207.68
  4. Step 4: Simplify right side
    92,761.51x = 3,646,273,208.02
  5. Step 5: Solve for x
    x = 3,646,273,208.02/92,761.51
  6. Step 6: Final answer
    x = 39,308.04

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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.