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Finding the Fourth Proportional to 13,824,010.80, 20,698,691.40 and 13,824,010.80

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Solution

The fourth proportional to 13,824,010.80, 20,698,691.40 and 13,824,010.80 is: 20,698,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824,010.80 : 20,698,691.40 = 13,824,010.80 : x
  2. Step 2: Convert to fraction form
    13,824,010.80/20,698,691.40 = 13,824,010.80/x
  3. Step 3: Cross multiply
    13,824,010.80x = 20,698,691.40 × 13,824,010.80
  4. Step 4: Simplify right side
    13,824,010.80x = 286,138,933,459,467.12
  5. Step 5: Solve for x
    x = 286,138,933,459,467.12/13,824,010.80
  6. Step 6: Final answer
    x = 20,698,691.40

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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.