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Finding the Fourth Proportional to 265,793,622.80, 398,615,784.60 and 84,096,496.40

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Solution

The fourth proportional to 265,793,622.80, 398,615,784.60 and 84,096,496.40 is: 126,121,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,793,622.80 : 398,615,784.60 = 84,096,496.40 : x
  2. Step 2: Convert to fraction form
    265,793,622.80/398,615,784.60 = 84,096,496.40/x
  3. Step 3: Cross multiply
    265,793,622.80x = 398,615,784.60 × 84,096,496.40
  4. Step 4: Simplify right side
    265,793,622.80x = 33,522,190,894,597,080
  5. Step 5: Solve for x
    x = 33,522,190,894,597,080/265,793,622.80
  6. Step 6: Final answer
    x = 126,121,125.64

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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.