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Finding the Fourth Proportional to 139,683.48, 192,629.16 and 93,846.68

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Solution

The fourth proportional to 139,683.48, 192,629.16 and 93,846.68 is: 129,418.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,683.48 : 192,629.16 = 93,846.68 : x
  2. Step 2: Convert to fraction form
    139,683.48/192,629.16 = 93,846.68/x
  3. Step 3: Cross multiply
    139,683.48x = 192,629.16 × 93,846.68
  4. Step 4: Simplify right side
    139,683.48x = 18,077,607,137.19
  5. Step 5: Solve for x
    x = 18,077,607,137.19/139,683.48
  6. Step 6: Final answer
    x = 129,418.36

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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.