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Finding the Fourth Proportional to 111,812.54, 154,522.69 and 91,637.60

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Solution

The fourth proportional to 111,812.54, 154,522.69 and 91,637.60 is: 126,641.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,812.54 : 154,522.69 = 91,637.60 : x
  2. Step 2: Convert to fraction form
    111,812.54/154,522.69 = 91,637.60/x
  3. Step 3: Cross multiply
    111,812.54x = 154,522.69 × 91,637.60
  4. Step 4: Simplify right side
    111,812.54x = 14,160,087,455.44
  5. Step 5: Solve for x
    x = 14,160,087,455.44/111,812.54
  6. Step 6: Final answer
    x = 126,641.32

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1.5x scale

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.