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Finding the Fourth Proportional to 71,707.84, 98,959.23 and 39,443.83

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Solution

The fourth proportional to 71,707.84, 98,959.23 and 39,443.83 is: 54,433.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,707.84 : 98,959.23 = 39,443.83 : x
  2. Step 2: Convert to fraction form
    71,707.84/98,959.23 = 39,443.83/x
  3. Step 3: Cross multiply
    71,707.84x = 98,959.23 × 39,443.83
  4. Step 4: Simplify right side
    71,707.84x = 3,903,331,045.05
  5. Step 5: Solve for x
    x = 3,903,331,045.05/71,707.84
  6. Step 6: Final answer
    x = 54,433.81

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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.