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Finding the Fourth Proportional to 7,898,645.20, 11,073,033.20 and 7,898,645.20

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Solution

The fourth proportional to 7,898,645.20, 11,073,033.20 and 7,898,645.20 is: 11,073,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898,645.20 : 11,073,033.20 = 7,898,645.20 : x
  2. Step 2: Convert to fraction form
    7,898,645.20/11,073,033.20 = 7,898,645.20/x
  3. Step 3: Cross multiply
    7,898,645.20x = 11,073,033.20 × 7,898,645.20
  4. Step 4: Simplify right side
    7,898,645.20x = 87,461,960,534,620.64
  5. Step 5: Solve for x
    x = 87,461,960,534,620.64/7,898,645.20
  6. Step 6: Final answer
    x = 11,073,033.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.