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Finding the Fourth Proportional to 112,993.98, 155,931.25 and 62,007.56

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Solution

The fourth proportional to 112,993.98, 155,931.25 and 62,007.56 is: 85,570.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,993.98 : 155,931.25 = 62,007.56 : x
  2. Step 2: Convert to fraction form
    112,993.98/155,931.25 = 62,007.56/x
  3. Step 3: Cross multiply
    112,993.98x = 155,931.25 × 62,007.56
  4. Step 4: Simplify right side
    112,993.98x = 9,668,916,340.25
  5. Step 5: Solve for x
    x = 9,668,916,340.25/112,993.98
  6. Step 6: Final answer
    x = 85,570.19

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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.