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Finding the Fourth Proportional to 100,068.70, 149,738.55 and 73,824.70

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Solution

The fourth proportional to 100,068.70, 149,738.55 and 73,824.70 is: 110,468.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,068.70 : 149,738.55 = 73,824.70 : x
  2. Step 2: Convert to fraction form
    100,068.70/149,738.55 = 73,824.70/x
  3. Step 3: Cross multiply
    100,068.70x = 149,738.55 × 73,824.70
  4. Step 4: Simplify right side
    100,068.70x = 11,054,403,532.19
  5. Step 5: Solve for x
    x = 11,054,403,532.19/100,068.70
  6. Step 6: Final answer
    x = 110,468.14

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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.