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Finding the Fourth Proportional to 6,439,866.80, 9,651,505.80 and 4,936,506.80

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Solution

The fourth proportional to 6,439,866.80, 9,651,505.80 and 4,936,506.80 is: 7,398,402.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439,866.80 : 9,651,505.80 = 4,936,506.80 : x
  2. Step 2: Convert to fraction form
    6,439,866.80/9,651,505.80 = 4,936,506.80/x
  3. Step 3: Cross multiply
    6,439,866.80x = 9,651,505.80 × 4,936,506.80
  4. Step 4: Simplify right side
    6,439,866.80x = 47,644,724,011,939.45
  5. Step 5: Solve for x
    x = 47,644,724,011,939.45/6,439,866.80
  6. Step 6: Final answer
    x = 7,398,402.09

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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.