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Finding the Fourth Proportional to 103,438,353,357.30, 155,157,530,035.92 and 103,438,353,357.30

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Solution

The fourth proportional to 103,438,353,357.30, 155,157,530,035.92 and 103,438,353,357.30 is: 155,157,530,035.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438,353,357.30 : 155,157,530,035.92 = 103,438,353,357.30 : x
  2. Step 2: Convert to fraction form
    103,438,353,357.30/155,157,530,035.92 = 103,438,353,357.30/x
  3. Step 3: Cross multiply
    103,438,353,357.30x = 155,157,530,035.92 × 103,438,353,357.30
  4. Step 4: Simplify right side
    103,438,353,357.30x = 16,049,239,417,901,383,942,144
  5. Step 5: Solve for x
    x = 16,049,239,417,901,383,942,144/103,438,353,357.30
  6. Step 6: Final answer
    x = 155,157,530,035.92

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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.