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Finding the Fourth Proportional to 93,403.08, 139,402.53 and 85,471.56

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Solution

The fourth proportional to 93,403.08, 139,402.53 and 85,471.56 is: 127,564.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,403.08 : 139,402.53 = 85,471.56 : x
  2. Step 2: Convert to fraction form
    93,403.08/139,402.53 = 85,471.56/x
  3. Step 3: Cross multiply
    93,403.08x = 139,402.53 × 85,471.56
  4. Step 4: Simplify right side
    93,403.08x = 11,914,951,707.05
  5. Step 5: Solve for x
    x = 11,914,951,707.05/93,403.08
  6. Step 6: Final answer
    x = 127,564.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.