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Finding the Fourth Proportional to 189,040.29, 260,873.57 and 108,480.51

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Solution

The fourth proportional to 189,040.29, 260,873.57 and 108,480.51 is: 149,701.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,040.29 : 260,873.57 = 108,480.51 : x
  2. Step 2: Convert to fraction form
    189,040.29/260,873.57 = 108,480.51/x
  3. Step 3: Cross multiply
    189,040.29x = 260,873.57 × 108,480.51
  4. Step 4: Simplify right side
    189,040.29x = 28,299,697,376.72
  5. Step 5: Solve for x
    x = 28,299,697,376.72/189,040.29
  6. Step 6: Final answer
    x = 149,701.94

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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.