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Finding the Fourth Proportional to 111,433.43, 153,740.74 and 63,652.95

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Solution

The fourth proportional to 111,433.43, 153,740.74 and 63,652.95 is: 87,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,433.43 : 153,740.74 = 63,652.95 : x
  2. Step 2: Convert to fraction form
    111,433.43/153,740.74 = 63,652.95/x
  3. Step 3: Cross multiply
    111,433.43x = 153,740.74 × 63,652.95
  4. Step 4: Simplify right side
    111,433.43x = 9,786,051,477.05
  5. Step 5: Solve for x
    x = 9,786,051,477.05/111,433.43
  6. Step 6: Final answer
    x = 87,819.71

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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.