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Finding the Fourth Proportional to 8,599,578.80, 12,880,705.80 and 7,106,586.80

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Solution

The fourth proportional to 8,599,578.80, 12,880,705.80 and 7,106,586.80 is: 10,644,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599,578.80 : 12,880,705.80 = 7,106,586.80 : x
  2. Step 2: Convert to fraction form
    8,599,578.80/12,880,705.80 = 7,106,586.80/x
  3. Step 3: Cross multiply
    8,599,578.80x = 12,880,705.80 × 7,106,586.80
  4. Step 4: Simplify right side
    8,599,578.80x = 91,537,853,812,963.44
  5. Step 5: Solve for x
    x = 91,537,853,812,963.44/8,599,578.80
  6. Step 6: Final answer
    x = 10,644,457.82

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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.