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Finding the Fourth Proportional to 354,294,879.30, 530,485,725.15 and 354,294,879.30

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Solution

The fourth proportional to 354,294,879.30, 530,485,725.15 and 354,294,879.30 is: 530,485,725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,294,879.30 : 530,485,725.15 = 354,294,879.30 : x
  2. Step 2: Convert to fraction form
    354,294,879.30/530,485,725.15 = 354,294,879.30/x
  3. Step 3: Cross multiply
    354,294,879.30x = 530,485,725.15 × 354,294,879.30
  4. Step 4: Simplify right side
    354,294,879.30x = 187,948,375,962,392,224
  5. Step 5: Solve for x
    x = 187,948,375,962,392,224/354,294,879.30
  6. Step 6: Final answer
    x = 530,485,725.15

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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.