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Finding the Fourth Proportional to 124,626.64, 185,986.16 and 111,329.68

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Solution

The fourth proportional to 124,626.64, 185,986.16 and 111,329.68 is: 166,142.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,626.64 : 185,986.16 = 111,329.68 : x
  2. Step 2: Convert to fraction form
    124,626.64/185,986.16 = 111,329.68/x
  3. Step 3: Cross multiply
    124,626.64x = 185,986.16 × 111,329.68
  4. Step 4: Simplify right side
    124,626.64x = 20,705,779,677.23
  5. Step 5: Solve for x
    x = 20,705,779,677.23/124,626.64
  6. Step 6: Final answer
    x = 166,142.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.