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Finding the Fourth Proportional to 135,720,363.60, 189,605,401.20 and 135,720,363.60

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Solution

The fourth proportional to 135,720,363.60, 189,605,401.20 and 135,720,363.60 is: 189,605,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,720,363.60 : 189,605,401.20 = 135,720,363.60 : x
  2. Step 2: Convert to fraction form
    135,720,363.60/189,605,401.20 = 135,720,363.60/x
  3. Step 3: Cross multiply
    135,720,363.60x = 189,605,401.20 × 135,720,363.60
  4. Step 4: Simplify right side
    135,720,363.60x = 25,733,313,991,387,872
  5. Step 5: Solve for x
    x = 25,733,313,991,387,872/135,720,363.60
  6. Step 6: Final answer
    x = 189,605,401.20

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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.