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Finding the Fourth Proportional to 134,492,661.20, 201,738,991.80 and 80,073,102.80

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Solution

The fourth proportional to 134,492,661.20, 201,738,991.80 and 80,073,102.80 is: 120,109,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,492,661.20 : 201,738,991.80 = 80,073,102.80 : x
  2. Step 2: Convert to fraction form
    134,492,661.20/201,738,991.80 = 80,073,102.80/x
  3. Step 3: Cross multiply
    134,492,661.20x = 201,738,991.80 × 80,073,102.80
  4. Step 4: Simplify right side
    134,492,661.20x = 16,153,867,029,169,758
  5. Step 5: Solve for x
    x = 16,153,867,029,169,758/134,492,661.20
  6. Step 6: Final answer
    x = 120,109,654.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.