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Finding the Fourth Proportional to 93,619.20, 140,428.80 and 58,627.20

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Solution

The fourth proportional to 93,619.20, 140,428.80 and 58,627.20 is: 87,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,619.20 : 140,428.80 = 58,627.20 : x
  2. Step 2: Convert to fraction form
    93,619.20/140,428.80 = 58,627.20/x
  3. Step 3: Cross multiply
    93,619.20x = 140,428.80 × 58,627.20
  4. Step 4: Simplify right side
    93,619.20x = 8,232,947,343.36
  5. Step 5: Solve for x
    x = 8,232,947,343.36/93,619.20
  6. Step 6: Final answer
    x = 87,940.80

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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.