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Finding the Fourth Proportional to 57,183, 85,679.76 and 40,460.16

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Solution

The fourth proportional to 57,183, 85,679.76 and 40,460.16 is: 60,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,183 : 85,679.76 = 40,460.16 : x
  2. Step 2: Convert to fraction form
    57,183/85,679.76 = 40,460.16/x
  3. Step 3: Cross multiply
    57,183x = 85,679.76 × 40,460.16
  4. Step 4: Simplify right side
    57,183x = 3,466,616,798.36
  5. Step 5: Solve for x
    x = 3,466,616,798.36/57,183
  6. Step 6: Final answer
    x = 60,623.21

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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.