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Finding the Fourth Proportional to 93,285.78, 139,928.63 and 34,089.15

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Solution

The fourth proportional to 93,285.78, 139,928.63 and 34,089.15 is: 51,133.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,285.78 : 139,928.63 = 34,089.15 : x
  2. Step 2: Convert to fraction form
    93,285.78/139,928.63 = 34,089.15/x
  3. Step 3: Cross multiply
    93,285.78x = 139,928.63 × 34,089.15
  4. Step 4: Simplify right side
    93,285.78x = 4,770,047,886.92
  5. Step 5: Solve for x
    x = 4,770,047,886.92/93,285.78
  6. Step 6: Final answer
    x = 51,133.71

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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.