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Finding the Fourth Proportional to 92,019.89, 138,029.88 and 28,844.93

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Solution

The fourth proportional to 92,019.89, 138,029.88 and 28,844.93 is: 43,267.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,019.89 : 138,029.88 = 28,844.93 : x
  2. Step 2: Convert to fraction form
    92,019.89/138,029.88 = 28,844.93/x
  3. Step 3: Cross multiply
    92,019.89x = 138,029.88 × 28,844.93
  4. Step 4: Simplify right side
    92,019.89x = 3,981,461,536.36
  5. Step 5: Solve for x
    x = 3,981,461,536.36/92,019.89
  6. Step 6: Final answer
    x = 43,267.40

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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.