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Finding the Fourth Proportional to 111,653.40, 167,220.90 and 109,061.40

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Solution

The fourth proportional to 111,653.40, 167,220.90 and 109,061.40 is: 163,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,653.40 : 167,220.90 = 109,061.40 : x
  2. Step 2: Convert to fraction form
    111,653.40/167,220.90 = 109,061.40/x
  3. Step 3: Cross multiply
    111,653.40x = 167,220.90 × 109,061.40
  4. Step 4: Simplify right side
    111,653.40x = 18,237,345,463.26
  5. Step 5: Solve for x
    x = 18,237,345,463.26/111,653.40
  6. Step 6: Final answer
    x = 163,338.92

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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.