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Finding the Fourth Proportional to 207,274.70, 310,912.06 and 74,218.70

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Solution

The fourth proportional to 207,274.70, 310,912.06 and 74,218.70 is: 111,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,274.70 : 310,912.06 = 74,218.70 : x
  2. Step 2: Convert to fraction form
    207,274.70/310,912.06 = 74,218.70/x
  3. Step 3: Cross multiply
    207,274.70x = 310,912.06 × 74,218.70
  4. Step 4: Simplify right side
    207,274.70x = 23,075,488,907.52
  5. Step 5: Solve for x
    x = 23,075,488,907.52/207,274.70
  6. Step 6: Final answer
    x = 111,328.05

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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.