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Finding the Fourth Proportional to 70,632,138.60, 99,111,742.20 and 70,632,138.60

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Solution

The fourth proportional to 70,632,138.60, 99,111,742.20 and 70,632,138.60 is: 99,111,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,632,138.60 : 99,111,742.20 = 70,632,138.60 : x
  2. Step 2: Convert to fraction form
    70,632,138.60/99,111,742.20 = 70,632,138.60/x
  3. Step 3: Cross multiply
    70,632,138.60x = 99,111,742.20 × 70,632,138.60
  4. Step 4: Simplify right side
    70,632,138.60x = 7,000,474,311,957,869
  5. Step 5: Solve for x
    x = 7,000,474,311,957,869/70,632,138.60
  6. Step 6: Final answer
    x = 99,111,742.20

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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.