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Finding the Fourth Proportional to 141,676.79, 195,515.25 and 78,014.84

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Solution

The fourth proportional to 141,676.79, 195,515.25 and 78,014.84 is: 107,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,676.79 : 195,515.25 = 78,014.84 : x
  2. Step 2: Convert to fraction form
    141,676.79/195,515.25 = 78,014.84/x
  3. Step 3: Cross multiply
    141,676.79x = 195,515.25 × 78,014.84
  4. Step 4: Simplify right side
    141,676.79x = 15,253,090,946.31
  5. Step 5: Solve for x
    x = 15,253,090,946.31/141,676.79
  6. Step 6: Final answer
    x = 107,661.18

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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.