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Finding the Fourth Proportional to 381,075.01, 525,845.60 and 219,981.95

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Solution

The fourth proportional to 381,075.01, 525,845.60 and 219,981.95 is: 303,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,075.01 : 525,845.60 = 219,981.95 : x
  2. Step 2: Convert to fraction form
    381,075.01/525,845.60 = 219,981.95/x
  3. Step 3: Cross multiply
    381,075.01x = 525,845.60 × 219,981.95
  4. Step 4: Simplify right side
    381,075.01x = 115,676,540,486.92
  5. Step 5: Solve for x
    x = 115,676,540,486.92/381,075.01
  6. Step 6: Final answer
    x = 303,553.20

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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.