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Finding the Fourth Proportional to 13,974,918.22, 20,966,655.60 and 7,156,319.26

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Solution

The fourth proportional to 13,974,918.22, 20,966,655.60 and 7,156,319.26 is: 10,736,669.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974,918.22 : 20,966,655.60 = 7,156,319.26 : x
  2. Step 2: Convert to fraction form
    13,974,918.22/20,966,655.60 = 7,156,319.26/x
  3. Step 3: Cross multiply
    13,974,918.22x = 20,966,655.60 × 7,156,319.26
  4. Step 4: Simplify right side
    13,974,918.22x = 150,044,081,288,066.88
  5. Step 5: Solve for x
    x = 150,044,081,288,066.88/13,974,918.22
  6. Step 6: Final answer
    x = 10,736,669.72

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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.