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Finding the Fourth Proportional to 111,783.74, 154,195.74 and 70,324.68

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Solution

The fourth proportional to 111,783.74, 154,195.74 and 70,324.68 is: 97,006.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,783.74 : 154,195.74 = 70,324.68 : x
  2. Step 2: Convert to fraction form
    111,783.74/154,195.74 = 70,324.68/x
  3. Step 3: Cross multiply
    111,783.74x = 154,195.74 × 70,324.68
  4. Step 4: Simplify right side
    111,783.74x = 10,843,766,072.86
  5. Step 5: Solve for x
    x = 10,843,766,072.86/111,783.74
  6. Step 6: Final answer
    x = 97,006.65

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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.