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Finding the Fourth Proportional to 13,205,796.90, 19,808,695.35 and 13,205,796.90

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Solution

The fourth proportional to 13,205,796.90, 19,808,695.35 and 13,205,796.90 is: 19,808,695.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205,796.90 : 19,808,695.35 = 13,205,796.90 : x
  2. Step 2: Convert to fraction form
    13,205,796.90/19,808,695.35 = 13,205,796.90/x
  3. Step 3: Cross multiply
    13,205,796.90x = 19,808,695.35 × 13,205,796.90
  4. Step 4: Simplify right side
    13,205,796.90x = 261,589,607,646,074.44
  5. Step 5: Solve for x
    x = 261,589,607,646,074.44/13,205,796.90
  6. Step 6: Final answer
    x = 19,808,695.35

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Similar ratio
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1.5x scale

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.