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Finding the Fourth Proportional to 22,890,692.60, 34,336,038.90 and 21,136,937.30

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Solution

The fourth proportional to 22,890,692.60, 34,336,038.90 and 21,136,937.30 is: 31,705,405.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,890,692.60 : 34,336,038.90 = 21,136,937.30 : x
  2. Step 2: Convert to fraction form
    22,890,692.60/34,336,038.90 = 21,136,937.30/x
  3. Step 3: Cross multiply
    22,890,692.60x = 34,336,038.90 × 21,136,937.30
  4. Step 4: Simplify right side
    22,890,692.60x = 725,758,701,359,661
  5. Step 5: Solve for x
    x = 725,758,701,359,661/22,890,692.60
  6. Step 6: Final answer
    x = 31,705,405.95

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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.