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Finding the Fourth Proportional to 18,838,656,019.20, 28,196,762,025.60 and 18,838,656,019.20

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Solution

The fourth proportional to 18,838,656,019.20, 28,196,762,025.60 and 18,838,656,019.20 is: 28,196,762,025.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838,656,019.20 : 28,196,762,025.60 = 18,838,656,019.20 : x
  2. Step 2: Convert to fraction form
    18,838,656,019.20/28,196,762,025.60 = 18,838,656,019.20/x
  3. Step 3: Cross multiply
    18,838,656,019.20x = 28,196,762,025.60 × 18,838,656,019.20
  4. Step 4: Simplify right side
    18,838,656,019.20x = 531,189,100,655,519,399,936
  5. Step 5: Solve for x
    x = 531,189,100,655,519,399,936/18,838,656,019.20
  6. Step 6: Final answer
    x = 28,196,762,025.60

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1.5x scale

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.