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Finding the Fourth Proportional to 93,078.60, 139,453.20 and 89,995.20

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Solution

The fourth proportional to 93,078.60, 139,453.20 and 89,995.20 is: 134,833.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,078.60 : 139,453.20 = 89,995.20 : x
  2. Step 2: Convert to fraction form
    93,078.60/139,453.20 = 89,995.20/x
  3. Step 3: Cross multiply
    93,078.60x = 139,453.20 × 89,995.20
  4. Step 4: Simplify right side
    93,078.60x = 12,550,118,624.64
  5. Step 5: Solve for x
    x = 12,550,118,624.64/93,078.60
  6. Step 6: Final answer
    x = 134,833.56

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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.