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Finding the Fourth Proportional to 66,355.28, 99,299.06 and 41,407.07

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Solution

The fourth proportional to 66,355.28, 99,299.06 and 41,407.07 is: 61,964.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.28 : 99,299.06 = 41,407.07 : x
  2. Step 2: Convert to fraction form
    66,355.28/99,299.06 = 41,407.07/x
  3. Step 3: Cross multiply
    66,355.28x = 99,299.06 × 41,407.07
  4. Step 4: Simplify right side
    66,355.28x = 4,111,682,921.32
  5. Step 5: Solve for x
    x = 4,111,682,921.32/66,355.28
  6. Step 6: Final answer
    x = 61,964.67

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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.