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Finding the Fourth Proportional to 101,404.60, 139,916.46 and 58,941.40

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Solution

The fourth proportional to 101,404.60, 139,916.46 and 58,941.40 is: 81,326.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,404.60 : 139,916.46 = 58,941.40 : x
  2. Step 2: Convert to fraction form
    101,404.60/139,916.46 = 58,941.40/x
  3. Step 3: Cross multiply
    101,404.60x = 139,916.46 × 58,941.40
  4. Step 4: Simplify right side
    101,404.60x = 8,246,872,035.44
  5. Step 5: Solve for x
    x = 8,246,872,035.44/101,404.60
  6. Step 6: Final answer
    x = 81,326.41

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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.