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Finding the Fourth Proportional to 93,549.93, 139,991.37 and 74,949.49

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Solution

The fourth proportional to 93,549.93, 139,991.37 and 74,949.49 is: 112,157.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,549.93 : 139,991.37 = 74,949.49 : x
  2. Step 2: Convert to fraction form
    93,549.93/139,991.37 = 74,949.49/x
  3. Step 3: Cross multiply
    93,549.93x = 139,991.37 × 74,949.49
  4. Step 4: Simplify right side
    93,549.93x = 10,492,281,785.90
  5. Step 5: Solve for x
    x = 10,492,281,785.90/93,549.93
  6. Step 6: Final answer
    x = 112,157.02

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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.