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Finding the Fourth Proportional to 139,098.72, 191,924.08 and 93,860.63

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Solution

The fourth proportional to 139,098.72, 191,924.08 and 93,860.63 is: 129,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,098.72 : 191,924.08 = 93,860.63 : x
  2. Step 2: Convert to fraction form
    139,098.72/191,924.08 = 93,860.63/x
  3. Step 3: Cross multiply
    139,098.72x = 191,924.08 × 93,860.63
  4. Step 4: Simplify right side
    139,098.72x = 18,014,114,101.35
  5. Step 5: Solve for x
    x = 18,014,114,101.35/139,098.72
  6. Step 6: Final answer
    x = 129,505.97

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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.