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Finding the Fourth Proportional to 13,772,973.17, 20,672,403.44 and 7,212,391.04

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Solution

The fourth proportional to 13,772,973.17, 20,672,403.44 and 7,212,391.04 is: 10,825,364.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,772,973.17 : 20,672,403.44 = 7,212,391.04 : x
  2. Step 2: Convert to fraction form
    13,772,973.17/20,672,403.44 = 7,212,391.04/x
  3. Step 3: Cross multiply
    13,772,973.17x = 20,672,403.44 × 7,212,391.04
  4. Step 4: Simplify right side
    13,772,973.17x = 149,097,457,206,497.19
  5. Step 5: Solve for x
    x = 149,097,457,206,497.19/13,772,973.17
  6. Step 6: Final answer
    x = 10,825,364.68

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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.