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Finding the Fourth Proportional to 111,812.53, 167,521.92 and 99,609.07

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Solution

The fourth proportional to 111,812.53, 167,521.92 and 99,609.07 is: 149,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,812.53 : 167,521.92 = 99,609.07 : x
  2. Step 2: Convert to fraction form
    111,812.53/167,521.92 = 99,609.07/x
  3. Step 3: Cross multiply
    111,812.53x = 167,521.92 × 99,609.07
  4. Step 4: Simplify right side
    111,812.53x = 16,686,702,655.81
  5. Step 5: Solve for x
    x = 16,686,702,655.81/111,812.53
  6. Step 6: Final answer
    x = 149,238.22

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1.5x scale

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.