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Finding the Fourth Proportional to 620,906,997.12, 931,360,496.58 and 252,355,601.49

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Solution

The fourth proportional to 620,906,997.12, 931,360,496.58 and 252,355,601.49 is: 378,533,402.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,906,997.12 : 931,360,496.58 = 252,355,601.49 : x
  2. Step 2: Convert to fraction form
    620,906,997.12/931,360,496.58 = 252,355,601.49/x
  3. Step 3: Cross multiply
    620,906,997.12x = 931,360,496.58 × 252,355,601.49
  4. Step 4: Simplify right side
    620,906,997.12x = 235,034,038,318,471,008
  5. Step 5: Solve for x
    x = 235,034,038,318,471,008/620,906,997.12
  6. Step 6: Final answer
    x = 378,533,402.60

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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.