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Finding the Fourth Proportional to 84,661.56, 116,790.66 and 54,048.96

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Solution

The fourth proportional to 84,661.56, 116,790.66 and 54,048.96 is: 74,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,661.56 : 116,790.66 = 54,048.96 : x
  2. Step 2: Convert to fraction form
    84,661.56/116,790.66 = 54,048.96/x
  3. Step 3: Cross multiply
    84,661.56x = 116,790.66 × 54,048.96
  4. Step 4: Simplify right side
    84,661.56x = 6,312,413,710.71
  5. Step 5: Solve for x
    x = 6,312,413,710.71/84,661.56
  6. Step 6: Final answer
    x = 74,560.56

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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.