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Finding the Fourth Proportional to 66,518.72, 99,718.73 and 24,388.95

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Solution

The fourth proportional to 66,518.72, 99,718.73 and 24,388.95 is: 36,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,518.72 : 99,718.73 = 24,388.95 : x
  2. Step 2: Convert to fraction form
    66,518.72/99,718.73 = 24,388.95/x
  3. Step 3: Cross multiply
    66,518.72x = 99,718.73 × 24,388.95
  4. Step 4: Simplify right side
    66,518.72x = 2,432,035,463.49
  5. Step 5: Solve for x
    x = 2,432,035,463.49/66,518.72
  6. Step 6: Final answer
    x = 36,561.67

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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.