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Finding the Fourth Proportional to 71,130.72, 98,163.23 and 40,916.01

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Solution

The fourth proportional to 71,130.72, 98,163.23 and 40,916.01 is: 56,465.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.72 : 98,163.23 = 40,916.01 : x
  2. Step 2: Convert to fraction form
    71,130.72/98,163.23 = 40,916.01/x
  3. Step 3: Cross multiply
    71,130.72x = 98,163.23 × 40,916.01
  4. Step 4: Simplify right side
    71,130.72x = 4,016,447,495.73
  5. Step 5: Solve for x
    x = 4,016,447,495.73/71,130.72
  6. Step 6: Final answer
    x = 56,465.72

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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.