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Finding the Fourth Proportional to 9,957,693.60, 13,910,911.20 and 9,957,693.60

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Solution

The fourth proportional to 9,957,693.60, 13,910,911.20 and 9,957,693.60 is: 13,910,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,957,693.60 : 13,910,911.20 = 9,957,693.60 : x
  2. Step 2: Convert to fraction form
    9,957,693.60/13,910,911.20 = 9,957,693.60/x
  3. Step 3: Cross multiply
    9,957,693.60x = 13,910,911.20 × 9,957,693.60
  4. Step 4: Simplify right side
    9,957,693.60x = 138,520,591,426,408.31
  5. Step 5: Solve for x
    x = 138,520,591,426,408.31/9,957,693.60
  6. Step 6: Final answer
    x = 13,910,911.20

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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.