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Finding the Fourth Proportional to 101,344.56, 139,862.52 and 58,916.40

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Solution

The fourth proportional to 101,344.56, 139,862.52 and 58,916.40 is: 81,308.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,344.56 : 139,862.52 = 58,916.40 : x
  2. Step 2: Convert to fraction form
    101,344.56/139,862.52 = 58,916.40/x
  3. Step 3: Cross multiply
    101,344.56x = 139,862.52 × 58,916.40
  4. Step 4: Simplify right side
    101,344.56x = 8,240,196,173.33
  5. Step 5: Solve for x
    x = 8,240,196,173.33/101,344.56
  6. Step 6: Final answer
    x = 81,308.72

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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.