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Finding the Fourth Proportional to 92,590.17, 138,891.80 and 45,830.49

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Solution

The fourth proportional to 92,590.17, 138,891.80 and 45,830.49 is: 68,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,590.17 : 138,891.80 = 45,830.49 : x
  2. Step 2: Convert to fraction form
    92,590.17/138,891.80 = 45,830.49/x
  3. Step 3: Cross multiply
    92,590.17x = 138,891.80 × 45,830.49
  4. Step 4: Simplify right side
    92,590.17x = 6,365,479,021.83
  5. Step 5: Solve for x
    x = 6,365,479,021.83/92,590.17
  6. Step 6: Final answer
    x = 68,748.97

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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.