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Finding the Fourth Proportional to 11,472,700.80, 17,209,828.80 and 3,900,237.60

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Solution

The fourth proportional to 11,472,700.80, 17,209,828.80 and 3,900,237.60 is: 5,850,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,472,700.80 : 17,209,828.80 = 3,900,237.60 : x
  2. Step 2: Convert to fraction form
    11,472,700.80/17,209,828.80 = 3,900,237.60/x
  3. Step 3: Cross multiply
    11,472,700.80x = 17,209,828.80 × 3,900,237.60
  4. Step 4: Simplify right side
    11,472,700.80x = 67,122,421,375,322.88
  5. Step 5: Solve for x
    x = 67,122,421,375,322.88/11,472,700.80
  6. Step 6: Final answer
    x = 5,850,620.75

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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.