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Finding the Fourth Proportional to 25,421.78, 35,081.09 and 14,091.45

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Solution

The fourth proportional to 25,421.78, 35,081.09 and 14,091.45 is: 19,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.78 : 35,081.09 = 14,091.45 : x
  2. Step 2: Convert to fraction form
    25,421.78/35,081.09 = 14,091.45/x
  3. Step 3: Cross multiply
    25,421.78x = 35,081.09 × 14,091.45
  4. Step 4: Simplify right side
    25,421.78x = 494,343,355.22
  5. Step 5: Solve for x
    x = 494,343,355.22/25,421.78
  6. Step 6: Final answer
    x = 19,445.67

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