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Finding the Fourth Proportional to 8,599,424.40, 12,899,136.60 and 4,812,415.20

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Solution

The fourth proportional to 8,599,424.40, 12,899,136.60 and 4,812,415.20 is: 7,218,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599,424.40 : 12,899,136.60 = 4,812,415.20 : x
  2. Step 2: Convert to fraction form
    8,599,424.40/12,899,136.60 = 4,812,415.20/x
  3. Step 3: Cross multiply
    8,599,424.40x = 12,899,136.60 × 4,812,415.20
  4. Step 4: Simplify right side
    8,599,424.40x = 62,076,001,040,716.32
  5. Step 5: Solve for x
    x = 62,076,001,040,716.32/8,599,424.40
  6. Step 6: Final answer
    x = 7,218,622.80

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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.