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Finding the Fourth Proportional to 9,679,865.92, 14,519,803.52 and 3,993,840.80

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Solution

The fourth proportional to 9,679,865.92, 14,519,803.52 and 3,993,840.80 is: 5,990,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,679,865.92 : 14,519,803.52 = 3,993,840.80 : x
  2. Step 2: Convert to fraction form
    9,679,865.92/14,519,803.52 = 3,993,840.80/x
  3. Step 3: Cross multiply
    9,679,865.92x = 14,519,803.52 × 3,993,840.80
  4. Step 4: Simplify right side
    9,679,865.92x = 57,989,783,706,159.61
  5. Step 5: Solve for x
    x = 57,989,783,706,159.61/9,679,865.92
  6. Step 6: Final answer
    x = 5,990,763.11

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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.