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Finding the Fourth Proportional to 140,291.64, 193,594.50 and 79,876.98

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Solution

The fourth proportional to 140,291.64, 193,594.50 and 79,876.98 is: 110,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,291.64 : 193,594.50 = 79,876.98 : x
  2. Step 2: Convert to fraction form
    140,291.64/193,594.50 = 79,876.98/x
  3. Step 3: Cross multiply
    140,291.64x = 193,594.50 × 79,876.98
  4. Step 4: Simplify right side
    140,291.64x = 15,463,744,004.61
  5. Step 5: Solve for x
    x = 15,463,744,004.61/140,291.64
  6. Step 6: Final answer
    x = 110,225.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.