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Finding the Fourth Proportional to 66,984,934.20, 100,477,401.30 and 32,972,710.20

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Solution

The fourth proportional to 66,984,934.20, 100,477,401.30 and 32,972,710.20 is: 49,459,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,984,934.20 : 100,477,401.30 = 32,972,710.20 : x
  2. Step 2: Convert to fraction form
    66,984,934.20/100,477,401.30 = 32,972,710.20/x
  3. Step 3: Cross multiply
    66,984,934.20x = 100,477,401.30 × 32,972,710.20
  4. Step 4: Simplify right side
    66,984,934.20x = 3,313,012,234,714,003
  5. Step 5: Solve for x
    x = 3,313,012,234,714,003/66,984,934.20
  6. Step 6: Final answer
    x = 49,459,065.30

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Double scale
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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.