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Finding the Fourth Proportional to 141,477.71, 195,153.87 and 87,039.18

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Solution

The fourth proportional to 141,477.71, 195,153.87 and 87,039.18 is: 120,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,477.71 : 195,153.87 = 87,039.18 : x
  2. Step 2: Convert to fraction form
    141,477.71/195,153.87 = 87,039.18/x
  3. Step 3: Cross multiply
    141,477.71x = 195,153.87 × 87,039.18
  4. Step 4: Simplify right side
    141,477.71x = 16,986,033,326.70
  5. Step 5: Solve for x
    x = 16,986,033,326.70/141,477.71
  6. Step 6: Final answer
    x = 120,061.55

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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.