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Finding the Fourth Proportional to 111,355.83, 153,644.49 and 62,958.74

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Solution

The fourth proportional to 111,355.83, 153,644.49 and 62,958.74 is: 86,868.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,355.83 : 153,644.49 = 62,958.74 : x
  2. Step 2: Convert to fraction form
    111,355.83/153,644.49 = 62,958.74/x
  3. Step 3: Cross multiply
    111,355.83x = 153,644.49 × 62,958.74
  4. Step 4: Simplify right side
    111,355.83x = 9,673,262,730.12
  5. Step 5: Solve for x
    x = 9,673,262,730.12/111,355.83
  6. Step 6: Final answer
    x = 86,868.04

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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.