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Finding the Fourth Proportional to 111,683.60, 154,121.58 and 61,381.52

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Solution

The fourth proportional to 111,683.60, 154,121.58 and 61,381.52 is: 84,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,683.60 : 154,121.58 = 61,381.52 : x
  2. Step 2: Convert to fraction form
    111,683.60/154,121.58 = 61,381.52/x
  3. Step 3: Cross multiply
    111,683.60x = 154,121.58 × 61,381.52
  4. Step 4: Simplify right side
    111,683.60x = 9,460,216,845.20
  5. Step 5: Solve for x
    x = 9,460,216,845.20/111,683.60
  6. Step 6: Final answer
    x = 84,705.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.