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Finding the Fourth Proportional to 71,586.79, 98,790.96 and 39,324.39

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Solution

The fourth proportional to 71,586.79, 98,790.96 and 39,324.39 is: 54,268.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,586.79 : 98,790.96 = 39,324.39 : x
  2. Step 2: Convert to fraction form
    71,586.79/98,790.96 = 39,324.39/x
  3. Step 3: Cross multiply
    71,586.79x = 98,790.96 × 39,324.39
  4. Step 4: Simplify right side
    71,586.79x = 3,884,894,239.51
  5. Step 5: Solve for x
    x = 3,884,894,239.51/71,586.79
  6. Step 6: Final answer
    x = 54,268.31

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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.