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Finding the Fourth Proportional to 93,129.39, 139,471.74 and 53,603.42

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Solution

The fourth proportional to 93,129.39, 139,471.74 and 53,603.42 is: 80,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,129.39 : 139,471.74 = 53,603.42 : x
  2. Step 2: Convert to fraction form
    93,129.39/139,471.74 = 53,603.42/x
  3. Step 3: Cross multiply
    93,129.39x = 139,471.74 × 53,603.42
  4. Step 4: Simplify right side
    93,129.39x = 7,476,161,559.99
  5. Step 5: Solve for x
    x = 7,476,161,559.99/93,129.39
  6. Step 6: Final answer
    x = 80,277.15

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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.