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Finding the Fourth Proportional to 13,486,595.80, 20,229,893.70 and 13,486,595.80

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Solution

The fourth proportional to 13,486,595.80, 20,229,893.70 and 13,486,595.80 is: 20,229,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486,595.80 : 20,229,893.70 = 13,486,595.80 : x
  2. Step 2: Convert to fraction form
    13,486,595.80/20,229,893.70 = 13,486,595.80/x
  3. Step 3: Cross multiply
    13,486,595.80x = 20,229,893.70 × 13,486,595.80
  4. Step 4: Simplify right side
    13,486,595.80x = 272,832,399,408,866.47
  5. Step 5: Solve for x
    x = 272,832,399,408,866.47/13,486,595.80
  6. Step 6: Final answer
    x = 20,229,893.70

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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.