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Finding the Fourth Proportional to 66,313.40, 99,471.14 and 36,918.07

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Solution

The fourth proportional to 66,313.40, 99,471.14 and 36,918.07 is: 55,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,313.40 : 99,471.14 = 36,918.07 : x
  2. Step 2: Convert to fraction form
    66,313.40/99,471.14 = 36,918.07/x
  3. Step 3: Cross multiply
    66,313.40x = 99,471.14 × 36,918.07
  4. Step 4: Simplify right side
    66,313.40x = 3,672,281,827.55
  5. Step 5: Solve for x
    x = 3,672,281,827.55/66,313.40
  6. Step 6: Final answer
    x = 55,377.67

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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.