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Finding the Fourth Proportional to 141,602.31, 195,412.50 and 77,940.56

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Solution

The fourth proportional to 141,602.31, 195,412.50 and 77,940.56 is: 107,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,602.31 : 195,412.50 = 77,940.56 : x
  2. Step 2: Convert to fraction form
    141,602.31/195,412.50 = 77,940.56/x
  3. Step 3: Cross multiply
    141,602.31x = 195,412.50 × 77,940.56
  4. Step 4: Simplify right side
    141,602.31x = 15,230,560,169.53
  5. Step 5: Solve for x
    x = 15,230,560,169.53/141,602.31
  6. Step 6: Final answer
    x = 107,558.70

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1.5x scale

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.