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Finding the Fourth Proportional to 139,968,168.20, 196,156,989.40 and 139,968,168.20

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Solution

The fourth proportional to 139,968,168.20, 196,156,989.40 and 139,968,168.20 is: 196,156,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,168.20 : 196,156,989.40 = 139,968,168.20 : x
  2. Step 2: Convert to fraction form
    139,968,168.20/196,156,989.40 = 139,968,168.20/x
  3. Step 3: Cross multiply
    139,968,168.20x = 196,156,989.40 × 139,968,168.20
  4. Step 4: Simplify right side
    139,968,168.20x = 27,455,734,485,944,816
  5. Step 5: Solve for x
    x = 27,455,734,485,944,816/139,968,168.20
  6. Step 6: Final answer
    x = 196,156,989.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.