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Finding the Fourth Proportional to 9,976,800.80, 14,969,607.60 and 4,856,391.20

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Solution

The fourth proportional to 9,976,800.80, 14,969,607.60 and 4,856,391.20 is: 7,286,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,976,800.80 : 14,969,607.60 = 4,856,391.20 : x
  2. Step 2: Convert to fraction form
    9,976,800.80/14,969,607.60 = 4,856,391.20/x
  3. Step 3: Cross multiply
    9,976,800.80x = 14,969,607.60 × 4,856,391.20
  4. Step 4: Simplify right side
    9,976,800.80x = 72,698,270,616,093.12
  5. Step 5: Solve for x
    x = 72,698,270,616,093.12/9,976,800.80
  6. Step 6: Final answer
    x = 7,286,731.70

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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.