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Finding the Fourth Proportional to 355,075.33, 489,996.36 and 193,931.01

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Solution

The fourth proportional to 355,075.33, 489,996.36 and 193,931.01 is: 267,620.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,075.33 : 489,996.36 = 193,931.01 : x
  2. Step 2: Convert to fraction form
    355,075.33/489,996.36 = 193,931.01/x
  3. Step 3: Cross multiply
    355,075.33x = 489,996.36 × 193,931.01
  4. Step 4: Simplify right side
    355,075.33x = 95,025,488,991.12
  5. Step 5: Solve for x
    x = 95,025,488,991.12/355,075.33
  6. Step 6: Final answer
    x = 267,620.65

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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.