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Finding the Fourth Proportional to 111,861,614.40, 167,508,986.40 and 89,186,798.40

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Solution

The fourth proportional to 111,861,614.40, 167,508,986.40 and 89,186,798.40 is: 133,554,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,861,614.40 : 167,508,986.40 = 89,186,798.40 : x
  2. Step 2: Convert to fraction form
    111,861,614.40/167,508,986.40 = 89,186,798.40/x
  3. Step 3: Cross multiply
    111,861,614.40x = 167,508,986.40 × 89,186,798.40
  4. Step 4: Simplify right side
    111,861,614.40x = 14,939,590,200,245,144
  5. Step 5: Solve for x
    x = 14,939,590,200,245,144/111,861,614.40
  6. Step 6: Final answer
    x = 133,554,215.90

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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.