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Finding the Fourth Proportional to 53,901.80, 80,852.70 and 30,282.20

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Solution

The fourth proportional to 53,901.80, 80,852.70 and 30,282.20 is: 45,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,901.80 : 80,852.70 = 30,282.20 : x
  2. Step 2: Convert to fraction form
    53,901.80/80,852.70 = 30,282.20/x
  3. Step 3: Cross multiply
    53,901.80x = 80,852.70 × 30,282.20
  4. Step 4: Simplify right side
    53,901.80x = 2,448,397,631.94
  5. Step 5: Solve for x
    x = 2,448,397,631.94/53,901.80
  6. Step 6: Final answer
    x = 45,423.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.