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Finding the Fourth Proportional to 73,185.76, 109,925.60 and 43,661.28

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Solution

The fourth proportional to 73,185.76, 109,925.60 and 43,661.28 is: 65,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,185.76 : 109,925.60 = 43,661.28 : x
  2. Step 2: Convert to fraction form
    73,185.76/109,925.60 = 43,661.28/x
  3. Step 3: Cross multiply
    73,185.76x = 109,925.60 × 43,661.28
  4. Step 4: Simplify right side
    73,185.76x = 4,799,492,400.77
  5. Step 5: Solve for x
    x = 4,799,492,400.77/73,185.76
  6. Step 6: Final answer
    x = 65,579.59

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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.