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Finding the Fourth Proportional to 1,259,569,305.54, 1,737,990,408 and 730,812,082.56

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Solution

The fourth proportional to 1,259,569,305.54, 1,737,990,408 and 730,812,082.56 is: 1,008,395,793.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,569,305.54 : 1,737,990,408 = 730,812,082.56 : x
  2. Step 2: Convert to fraction form
    1,259,569,305.54/1,737,990,408 = 730,812,082.56/x
  3. Step 3: Cross multiply
    1,259,569,305.54x = 1,737,990,408 × 730,812,082.56
  4. Step 4: Simplify right side
    1,259,569,305.54x = 1,270,144,389,539,783,936
  5. Step 5: Solve for x
    x = 1,270,144,389,539,783,936/1,259,569,305.54
  6. Step 6: Final answer
    x = 1,008,395,793.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.