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Finding the Fourth Proportional to 104,806.78, 144,632.99 and 57,060.11

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Solution

The fourth proportional to 104,806.78, 144,632.99 and 57,060.11 is: 78,742.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,806.78 : 144,632.99 = 57,060.11 : x
  2. Step 2: Convert to fraction form
    104,806.78/144,632.99 = 57,060.11/x
  3. Step 3: Cross multiply
    104,806.78x = 144,632.99 × 57,060.11
  4. Step 4: Simplify right side
    104,806.78x = 8,252,774,823.26
  5. Step 5: Solve for x
    x = 8,252,774,823.26/104,806.78
  6. Step 6: Final answer
    x = 78,742.76

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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.