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Finding the Fourth Proportional to 354,436,902.90, 531,655,354.35 and 354,436,902.90

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Solution

The fourth proportional to 354,436,902.90, 531,655,354.35 and 354,436,902.90 is: 531,655,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,436,902.90 : 531,655,354.35 = 354,436,902.90 : x
  2. Step 2: Convert to fraction form
    354,436,902.90/531,655,354.35 = 354,436,902.90/x
  3. Step 3: Cross multiply
    354,436,902.90x = 531,655,354.35 × 354,436,902.90
  4. Step 4: Simplify right side
    354,436,902.90x = 188,438,277,206,016,032
  5. Step 5: Solve for x
    x = 188,438,277,206,016,032/354,436,902.90
  6. Step 6: Final answer
    x = 531,655,354.35

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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.