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Finding the Fourth Proportional to 412,920,876,692.45, 619,381,315,038.65 and 412,920,876,692.45

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Solution

The fourth proportional to 412,920,876,692.45, 619,381,315,038.65 and 412,920,876,692.45 is: 619,381,315,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,920,876,692.45 : 619,381,315,038.65 = 412,920,876,692.45 : x
  2. Step 2: Convert to fraction form
    412,920,876,692.45/619,381,315,038.65 = 412,920,876,692.45/x
  3. Step 3: Cross multiply
    412,920,876,692.45x = 619,381,315,038.65 × 412,920,876,692.45
  4. Step 4: Simplify right side
    412,920,876,692.45x = 255,755,475,612,681,956,753,408
  5. Step 5: Solve for x
    x = 255,755,475,612,681,956,753,408/412,920,876,692.45
  6. Step 6: Final answer
    x = 619,381,315,038.65

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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.