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Finding the Fourth Proportional to 67,003,850.40, 100,505,775.60 and 60,201,405.60

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Solution

The fourth proportional to 67,003,850.40, 100,505,775.60 and 60,201,405.60 is: 90,302,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,003,850.40 : 100,505,775.60 = 60,201,405.60 : x
  2. Step 2: Convert to fraction form
    67,003,850.40/100,505,775.60 = 60,201,405.60/x
  3. Step 3: Cross multiply
    67,003,850.40x = 100,505,775.60 × 60,201,405.60
  4. Step 4: Simplify right side
    67,003,850.40x = 6,050,588,962,038,183
  5. Step 5: Solve for x
    x = 6,050,588,962,038,183/67,003,850.40
  6. Step 6: Final answer
    x = 90,302,108.40

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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.