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Finding the Fourth Proportional to 92,126.22, 138,007.89 and 85,646.22

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Solution

The fourth proportional to 92,126.22, 138,007.89 and 85,646.22 is: 128,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,126.22 : 138,007.89 = 85,646.22 : x
  2. Step 2: Convert to fraction form
    92,126.22/138,007.89 = 85,646.22/x
  3. Step 3: Cross multiply
    92,126.22x = 138,007.89 × 85,646.22
  4. Step 4: Simplify right side
    92,126.22x = 11,819,854,108.68
  5. Step 5: Solve for x
    x = 11,819,854,108.68/92,126.22
  6. Step 6: Final answer
    x = 128,300.65

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1.5x scale

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.