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Finding the Fourth Proportional to 13,668,249.60, 20,502,374.40 and 3,571,891.20

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Solution

The fourth proportional to 13,668,249.60, 20,502,374.40 and 3,571,891.20 is: 5,357,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668,249.60 : 20,502,374.40 = 3,571,891.20 : x
  2. Step 2: Convert to fraction form
    13,668,249.60/20,502,374.40 = 3,571,891.20/x
  3. Step 3: Cross multiply
    13,668,249.60x = 20,502,374.40 × 3,571,891.20
  4. Step 4: Simplify right side
    13,668,249.60x = 73,232,250,698,465.28
  5. Step 5: Solve for x
    x = 73,232,250,698,465.28/13,668,249.60
  6. Step 6: Final answer
    x = 5,357,836.80

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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.