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Finding the Fourth Proportional to 139,558.68, 192,645.71 and 98,935.13

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Solution

The fourth proportional to 139,558.68, 192,645.71 and 98,935.13 is: 136,569.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,558.68 : 192,645.71 = 98,935.13 : x
  2. Step 2: Convert to fraction form
    139,558.68/192,645.71 = 98,935.13/x
  3. Step 3: Cross multiply
    139,558.68x = 192,645.71 × 98,935.13
  4. Step 4: Simplify right side
    139,558.68x = 19,059,428,362.79
  5. Step 5: Solve for x
    x = 19,059,428,362.79/139,558.68
  6. Step 6: Final answer
    x = 136,569.28

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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.