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Finding the Fourth Proportional to 213,157.36, 319,736.04 and 134,075.44

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Solution

The fourth proportional to 213,157.36, 319,736.04 and 134,075.44 is: 201,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,157.36 : 319,736.04 = 134,075.44 : x
  2. Step 2: Convert to fraction form
    213,157.36/319,736.04 = 134,075.44/x
  3. Step 3: Cross multiply
    213,157.36x = 319,736.04 × 134,075.44
  4. Step 4: Simplify right side
    213,157.36x = 42,868,750,246.86
  5. Step 5: Solve for x
    x = 42,868,750,246.86/213,157.36
  6. Step 6: Final answer
    x = 201,113.16

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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.