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Finding the Fourth Proportional to 68,990,847.40, 103,486,271.10 and 34,978,623.40

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Solution

The fourth proportional to 68,990,847.40, 103,486,271.10 and 34,978,623.40 is: 52,467,935.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,990,847.40 : 103,486,271.10 = 34,978,623.40 : x
  2. Step 2: Convert to fraction form
    68,990,847.40/103,486,271.10 = 34,978,623.40/x
  3. Step 3: Cross multiply
    68,990,847.40x = 103,486,271.10 × 34,978,623.40
  4. Step 4: Simplify right side
    68,990,847.40x = 3,619,807,303,877,203.50
  5. Step 5: Solve for x
    x = 3,619,807,303,877,203.50/68,990,847.40
  6. Step 6: Final answer
    x = 52,467,935.10

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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.