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Finding the Fourth Proportional to 19,848.67, 27,390.15 and 11,782.67

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Solution

The fourth proportional to 19,848.67, 27,390.15 and 11,782.67 is: 16,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,848.67 : 27,390.15 = 11,782.67 : x
  2. Step 2: Convert to fraction form
    19,848.67/27,390.15 = 11,782.67/x
  3. Step 3: Cross multiply
    19,848.67x = 27,390.15 × 11,782.67
  4. Step 4: Simplify right side
    19,848.67x = 322,729,211.36
  5. Step 5: Solve for x
    x = 322,729,211.36/19,848.67
  6. Step 6: Final answer
    x = 16,259.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.