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Finding the Fourth Proportional to 66,668.10, 99,981.77 and 35,060.99

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Solution

The fourth proportional to 66,668.10, 99,981.77 and 35,060.99 is: 52,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668.10 : 99,981.77 = 35,060.99 : x
  2. Step 2: Convert to fraction form
    66,668.10/99,981.77 = 35,060.99/x
  3. Step 3: Cross multiply
    66,668.10x = 99,981.77 × 35,060.99
  4. Step 4: Simplify right side
    66,668.10x = 3,505,459,838.15
  5. Step 5: Solve for x
    x = 3,505,459,838.15/66,668.10
  6. Step 6: Final answer
    x = 52,580.77

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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.