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Finding the Fourth Proportional to 93,105.87, 139,728.09 and 45,746.39

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Solution

The fourth proportional to 93,105.87, 139,728.09 and 45,746.39 is: 68,653.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,105.87 : 139,728.09 = 45,746.39 : x
  2. Step 2: Convert to fraction form
    93,105.87/139,728.09 = 45,746.39/x
  3. Step 3: Cross multiply
    93,105.87x = 139,728.09 × 45,746.39
  4. Step 4: Simplify right side
    93,105.87x = 6,392,055,000.45
  5. Step 5: Solve for x
    x = 6,392,055,000.45/93,105.87
  6. Step 6: Final answer
    x = 68,653.62

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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.