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Finding the Fourth Proportional to 93,291.92, 128,745.96 and 55,561.04

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Solution

The fourth proportional to 93,291.92, 128,745.96 and 55,561.04 is: 76,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,291.92 : 128,745.96 = 55,561.04 : x
  2. Step 2: Convert to fraction form
    93,291.92/128,745.96 = 55,561.04/x
  3. Step 3: Cross multiply
    93,291.92x = 128,745.96 × 55,561.04
  4. Step 4: Simplify right side
    93,291.92x = 7,153,259,433.40
  5. Step 5: Solve for x
    x = 7,153,259,433.40/93,291.92
  6. Step 6: Final answer
    x = 76,676.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.