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Finding the Fourth Proportional to 100,683.59, 150,696.78 and 74,022.53

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Solution

The fourth proportional to 100,683.59, 150,696.78 and 74,022.53 is: 110,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,683.59 : 150,696.78 = 74,022.53 : x
  2. Step 2: Convert to fraction form
    100,683.59/150,696.78 = 74,022.53/x
  3. Step 3: Cross multiply
    100,683.59x = 150,696.78 × 74,022.53
  4. Step 4: Simplify right side
    100,683.59x = 11,154,956,918.45
  5. Step 5: Solve for x
    x = 11,154,956,918.45/100,683.59
  6. Step 6: Final answer
    x = 110,792.20

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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.