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Finding the Fourth Proportional to 111,693.71, 154,138.50 and 60,706.44

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Solution

The fourth proportional to 111,693.71, 154,138.50 and 60,706.44 is: 83,775.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,693.71 : 154,138.50 = 60,706.44 : x
  2. Step 2: Convert to fraction form
    111,693.71/154,138.50 = 60,706.44/x
  3. Step 3: Cross multiply
    111,693.71x = 154,138.50 × 60,706.44
  4. Step 4: Simplify right side
    111,693.71x = 9,357,199,601.94
  5. Step 5: Solve for x
    x = 9,357,199,601.94/111,693.71
  6. Step 6: Final answer
    x = 83,775.53

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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.