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Finding the Fourth Proportional to 220,065,311.80, 330,097,967.70 and 118,028,639.80

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Solution

The fourth proportional to 220,065,311.80, 330,097,967.70 and 118,028,639.80 is: 177,042,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,065,311.80 : 330,097,967.70 = 118,028,639.80 : x
  2. Step 2: Convert to fraction form
    220,065,311.80/330,097,967.70 = 118,028,639.80/x
  3. Step 3: Cross multiply
    220,065,311.80x = 330,097,967.70 × 118,028,639.80
  4. Step 4: Simplify right side
    220,065,311.80x = 38,961,014,128,375,336
  5. Step 5: Solve for x
    x = 38,961,014,128,375,336/220,065,311.80
  6. Step 6: Final answer
    x = 177,042,959.70

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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.