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Finding the Fourth Proportional to 7,661.80, 10,573.80 and 4,304.50

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Solution

The fourth proportional to 7,661.80, 10,573.80 and 4,304.50 is: 5,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.80 : 10,573.80 = 4,304.50 : x
  2. Step 2: Convert to fraction form
    7,661.80/10,573.80 = 4,304.50/x
  3. Step 3: Cross multiply
    7,661.80x = 10,573.80 × 4,304.50
  4. Step 4: Simplify right side
    7,661.80x = 45,514,922.10
  5. Step 5: Solve for x
    x = 45,514,922.10/7,661.80
  6. Step 6: Final answer
    x = 5,940.50

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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.