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Finding the Fourth Proportional to 93,144.56, 139,638.47 and 40,514.40

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Solution

The fourth proportional to 93,144.56, 139,638.47 and 40,514.40 is: 60,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,144.56 : 139,638.47 = 40,514.40 : x
  2. Step 2: Convert to fraction form
    93,144.56/139,638.47 = 40,514.40/x
  3. Step 3: Cross multiply
    93,144.56x = 139,638.47 × 40,514.40
  4. Step 4: Simplify right side
    93,144.56x = 5,657,368,828.97
  5. Step 5: Solve for x
    x = 5,657,368,828.97/93,144.56
  6. Step 6: Final answer
    x = 60,737.51

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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.