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Finding the Fourth Proportional to 13,235,622.90, 18,555,066.30 and 13,235,622.90

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Solution

The fourth proportional to 13,235,622.90, 18,555,066.30 and 13,235,622.90 is: 18,555,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235,622.90 : 18,555,066.30 = 13,235,622.90 : x
  2. Step 2: Convert to fraction form
    13,235,622.90/18,555,066.30 = 13,235,622.90/x
  3. Step 3: Cross multiply
    13,235,622.90x = 18,555,066.30 × 13,235,622.90
  4. Step 4: Simplify right side
    13,235,622.90x = 245,587,860,431,298.28
  5. Step 5: Solve for x
    x = 245,587,860,431,298.28/13,235,622.90
  6. Step 6: Final answer
    x = 18,555,066.30

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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.