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Finding the Fourth Proportional to 83,211.80, 114,852.92 and 47,423.04

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Solution

The fourth proportional to 83,211.80, 114,852.92 and 47,423.04 is: 65,455.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,211.80 : 114,852.92 = 47,423.04 : x
  2. Step 2: Convert to fraction form
    83,211.80/114,852.92 = 47,423.04/x
  3. Step 3: Cross multiply
    83,211.80x = 114,852.92 × 47,423.04
  4. Step 4: Simplify right side
    83,211.80x = 5,446,674,619.28
  5. Step 5: Solve for x
    x = 5,446,674,619.28/83,211.80
  6. Step 6: Final answer
    x = 65,455.56

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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.