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Finding the Fourth Proportional to 139,564.65, 192,642.57 and 110,935.11

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Solution

The fourth proportional to 139,564.65, 192,642.57 and 110,935.11 is: 153,124.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,564.65 : 192,642.57 = 110,935.11 : x
  2. Step 2: Convert to fraction form
    139,564.65/192,642.57 = 110,935.11/x
  3. Step 3: Cross multiply
    139,564.65x = 192,642.57 × 110,935.11
  4. Step 4: Simplify right side
    139,564.65x = 21,370,823,730.42
  5. Step 5: Solve for x
    x = 21,370,823,730.42/139,564.65
  6. Step 6: Final answer
    x = 153,124.91

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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.