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Finding the Fourth Proportional to 381,075.80, 525,846.70 and 219,982.74

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Solution

The fourth proportional to 381,075.80, 525,846.70 and 219,982.74 is: 303,554.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,075.80 : 525,846.70 = 219,982.74 : x
  2. Step 2: Convert to fraction form
    381,075.80/525,846.70 = 219,982.74/x
  3. Step 3: Cross multiply
    381,075.80x = 525,846.70 × 219,982.74
  4. Step 4: Simplify right side
    381,075.80x = 115,677,199,146.90
  5. Step 5: Solve for x
    x = 115,677,199,146.90/381,075.80
  6. Step 6: Final answer
    x = 303,554.31

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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.