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Finding the Fourth Proportional to 9,907,801.80, 14,861,702.70 and 8,313,478.80

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Solution

The fourth proportional to 9,907,801.80, 14,861,702.70 and 8,313,478.80 is: 12,470,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907,801.80 : 14,861,702.70 = 8,313,478.80 : x
  2. Step 2: Convert to fraction form
    9,907,801.80/14,861,702.70 = 8,313,478.80/x
  3. Step 3: Cross multiply
    9,907,801.80x = 14,861,702.70 × 8,313,478.80
  4. Step 4: Simplify right side
    9,907,801.80x = 123,552,450,328,352.75
  5. Step 5: Solve for x
    x = 123,552,450,328,352.75/9,907,801.80
  6. Step 6: Final answer
    x = 12,470,218.20

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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.