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Finding the Fourth Proportional to 93,143.56, 139,636.97 and 40,513.40

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Solution

The fourth proportional to 93,143.56, 139,636.97 and 40,513.40 is: 60,736.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.56 : 139,636.97 = 40,513.40 : x
  2. Step 2: Convert to fraction form
    93,143.56/139,636.97 = 40,513.40/x
  3. Step 3: Cross multiply
    93,143.56x = 139,636.97 × 40,513.40
  4. Step 4: Simplify right side
    93,143.56x = 5,657,168,443.02
  5. Step 5: Solve for x
    x = 5,657,168,443.02/93,143.56
  6. Step 6: Final answer
    x = 60,736.02

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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.