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Finding the Fourth Proportional to 111,909,865.20, 167,864,797.80 and 66,448,258.80

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Solution

The fourth proportional to 111,909,865.20, 167,864,797.80 and 66,448,258.80 is: 99,672,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,909,865.20 : 167,864,797.80 = 66,448,258.80 : x
  2. Step 2: Convert to fraction form
    111,909,865.20/167,864,797.80 = 66,448,258.80/x
  3. Step 3: Cross multiply
    111,909,865.20x = 167,864,797.80 × 66,448,258.80
  4. Step 4: Simplify right side
    111,909,865.20x = 11,154,323,527,624,070
  5. Step 5: Solve for x
    x = 11,154,323,527,624,070/111,909,865.20
  6. Step 6: Final answer
    x = 99,672,388.20

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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.