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Finding the Fourth Proportional to 70,481,608.40, 105,722,412.60 and 48,982,523.60

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Solution

The fourth proportional to 70,481,608.40, 105,722,412.60 and 48,982,523.60 is: 73,473,785.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,481,608.40 : 105,722,412.60 = 48,982,523.60 : x
  2. Step 2: Convert to fraction form
    70,481,608.40/105,722,412.60 = 48,982,523.60/x
  3. Step 3: Cross multiply
    70,481,608.40x = 105,722,412.60 × 48,982,523.60
  4. Step 4: Simplify right side
    70,481,608.40x = 5,178,550,570,228,437
  5. Step 5: Solve for x
    x = 5,178,550,570,228,437/70,481,608.40
  6. Step 6: Final answer
    x = 73,473,785.40

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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.