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Finding the Fourth Proportional to 66,984,914.20, 100,477,371.30 and 32,972,690.20

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Solution

The fourth proportional to 66,984,914.20, 100,477,371.30 and 32,972,690.20 is: 49,459,035.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,984,914.20 : 100,477,371.30 = 32,972,690.20 : x
  2. Step 2: Convert to fraction form
    66,984,914.20/100,477,371.30 = 32,972,690.20/x
  3. Step 3: Cross multiply
    66,984,914.20x = 100,477,371.30 × 32,972,690.20
  4. Step 4: Simplify right side
    66,984,914.20x = 3,313,009,235,985,271
  5. Step 5: Solve for x
    x = 3,313,009,235,985,271/66,984,914.20
  6. Step 6: Final answer
    x = 49,459,035.30

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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.