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Finding the Fourth Proportional to 139,958, 193,210.99 and 96,970.09

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Solution

The fourth proportional to 139,958, 193,210.99 and 96,970.09 is: 133,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,958 : 193,210.99 = 96,970.09 : x
  2. Step 2: Convert to fraction form
    139,958/193,210.99 = 96,970.09/x
  3. Step 3: Cross multiply
    139,958x = 193,210.99 × 96,970.09
  4. Step 4: Simplify right side
    139,958x = 18,735,687,089.29
  5. Step 5: Solve for x
    x = 18,735,687,089.29/139,958
  6. Step 6: Final answer
    x = 133,866.50

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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.