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Finding the Fourth Proportional to 93,021.20, 139,531.80 and 33,858.80

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Solution

The fourth proportional to 93,021.20, 139,531.80 and 33,858.80 is: 50,788.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,021.20 : 139,531.80 = 33,858.80 : x
  2. Step 2: Convert to fraction form
    93,021.20/139,531.80 = 33,858.80/x
  3. Step 3: Cross multiply
    93,021.20x = 139,531.80 × 33,858.80
  4. Step 4: Simplify right side
    93,021.20x = 4,724,379,309.84
  5. Step 5: Solve for x
    x = 4,724,379,309.84/93,021.20
  6. Step 6: Final answer
    x = 50,788.20

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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.