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Finding the Fourth Proportional to 65,815,325.20, 98,722,987.80 and 46,683,449.20

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Solution

The fourth proportional to 65,815,325.20, 98,722,987.80 and 46,683,449.20 is: 70,025,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,815,325.20 : 98,722,987.80 = 46,683,449.20 : x
  2. Step 2: Convert to fraction form
    65,815,325.20/98,722,987.80 = 46,683,449.20/x
  3. Step 3: Cross multiply
    65,815,325.20x = 98,722,987.80 × 46,683,449.20
  4. Step 4: Simplify right side
    65,815,325.20x = 4,608,729,585,833,520
  5. Step 5: Solve for x
    x = 4,608,729,585,833,520/65,815,325.20
  6. Step 6: Final answer
    x = 70,025,173.80

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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.