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Finding the Fourth Proportional to 98,395.60, 135,787.44 and 53,683.60

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Solution

The fourth proportional to 98,395.60, 135,787.44 and 53,683.60 is: 74,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,395.60 : 135,787.44 = 53,683.60 : x
  2. Step 2: Convert to fraction form
    98,395.60/135,787.44 = 53,683.60/x
  3. Step 3: Cross multiply
    98,395.60x = 135,787.44 × 53,683.60
  4. Step 4: Simplify right side
    98,395.60x = 7,289,558,613.98
  5. Step 5: Solve for x
    x = 7,289,558,613.98/98,395.60
  6. Step 6: Final answer
    x = 74,084.19

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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.