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Finding the Fourth Proportional to 13,305,811.70, 19,958,717.55 and 13,305,811.70

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Solution

The fourth proportional to 13,305,811.70, 19,958,717.55 and 13,305,811.70 is: 19,958,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305,811.70 : 19,958,717.55 = 13,305,811.70 : x
  2. Step 2: Convert to fraction form
    13,305,811.70/19,958,717.55 = 13,305,811.70/x
  3. Step 3: Cross multiply
    13,305,811.70x = 19,958,717.55 × 13,305,811.70
  4. Step 4: Simplify right side
    13,305,811.70x = 265,566,937,493,785.34
  5. Step 5: Solve for x
    x = 265,566,937,493,785.34/13,305,811.70
  6. Step 6: Final answer
    x = 19,958,717.55

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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.