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Finding the Fourth Proportional to 6,472,007.20, 8,931,310.80 and 3,571,424.80

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Solution

The fourth proportional to 6,472,007.20, 8,931,310.80 and 3,571,424.80 is: 4,928,533.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472,007.20 : 8,931,310.80 = 3,571,424.80 : x
  2. Step 2: Convert to fraction form
    6,472,007.20/8,931,310.80 = 3,571,424.80/x
  3. Step 3: Cross multiply
    6,472,007.20x = 8,931,310.80 × 3,571,424.80
  4. Step 4: Simplify right side
    6,472,007.20x = 31,897,504,887,627.84
  5. Step 5: Solve for x
    x = 31,897,504,887,627.84/6,472,007.20
  6. Step 6: Final answer
    x = 4,928,533.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.