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Finding the Fourth Proportional to 141,469.76, 195,234.45 and 77,809.88

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Solution

The fourth proportional to 141,469.76, 195,234.45 and 77,809.88 is: 107,381.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,469.76 : 195,234.45 = 77,809.88 : x
  2. Step 2: Convert to fraction form
    141,469.76/195,234.45 = 77,809.88/x
  3. Step 3: Cross multiply
    141,469.76x = 195,234.45 × 77,809.88
  4. Step 4: Simplify right side
    141,469.76x = 15,191,169,126.37
  5. Step 5: Solve for x
    x = 15,191,169,126.37/141,469.76
  6. Step 6: Final answer
    x = 107,381.03

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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.