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Finding the Fourth Proportional to 12,764.70, 19,110.60 and 12,764.70

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Solution

The fourth proportional to 12,764.70, 19,110.60 and 12,764.70 is: 19,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,764.70 : 19,110.60 = 12,764.70 : x
  2. Step 2: Convert to fraction form
    12,764.70/19,110.60 = 12,764.70/x
  3. Step 3: Cross multiply
    12,764.70x = 19,110.60 × 12,764.70
  4. Step 4: Simplify right side
    12,764.70x = 243,941,075.82
  5. Step 5: Solve for x
    x = 243,941,075.82/12,764.70
  6. Step 6: Final answer
    x = 19,110.60

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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.