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Finding the Fourth Proportional to 124,455.58, 186,682.55 and 74,549.86

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Solution

The fourth proportional to 124,455.58, 186,682.55 and 74,549.86 is: 111,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,455.58 : 186,682.55 = 74,549.86 : x
  2. Step 2: Convert to fraction form
    124,455.58/186,682.55 = 74,549.86/x
  3. Step 3: Cross multiply
    124,455.58x = 186,682.55 × 74,549.86
  4. Step 4: Simplify right side
    124,455.58x = 13,917,157,966.94
  5. Step 5: Solve for x
    x = 13,917,157,966.94/124,455.58
  6. Step 6: Final answer
    x = 111,824.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.