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Finding the Fourth Proportional to 294,189.12, 405,761.04 and 186,790.56

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Solution

The fourth proportional to 294,189.12, 405,761.04 and 186,790.56 is: 257,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,189.12 : 405,761.04 = 186,790.56 : x
  2. Step 2: Convert to fraction form
    294,189.12/405,761.04 = 186,790.56/x
  3. Step 3: Cross multiply
    294,189.12x = 405,761.04 × 186,790.56
  4. Step 4: Simplify right side
    294,189.12x = 75,792,331,887.78
  5. Step 5: Solve for x
    x = 75,792,331,887.78/294,189.12
  6. Step 6: Final answer
    x = 257,631.32

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1.5x scale

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.