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Finding the Fourth Proportional to 141,957.96, 195,901.60 and 81,532.51

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Solution

The fourth proportional to 141,957.96, 195,901.60 and 81,532.51 is: 112,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,957.96 : 195,901.60 = 81,532.51 : x
  2. Step 2: Convert to fraction form
    141,957.96/195,901.60 = 81,532.51/x
  3. Step 3: Cross multiply
    141,957.96x = 195,901.60 × 81,532.51
  4. Step 4: Simplify right side
    141,957.96x = 15,972,349,161.02
  5. Step 5: Solve for x
    x = 15,972,349,161.02/141,957.96
  6. Step 6: Final answer
    x = 112,514.64

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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.