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Finding the Fourth Proportional to 303,203.60, 418,422.72 and 167,242.40

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Solution

The fourth proportional to 303,203.60, 418,422.72 and 167,242.40 is: 230,795.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,203.60 : 418,422.72 = 167,242.40 : x
  2. Step 2: Convert to fraction form
    303,203.60/418,422.72 = 167,242.40/x
  3. Step 3: Cross multiply
    303,203.60x = 418,422.72 × 167,242.40
  4. Step 4: Simplify right side
    303,203.60x = 69,978,019,907.33
  5. Step 5: Solve for x
    x = 69,978,019,907.33/303,203.60
  6. Step 6: Final answer
    x = 230,795.48

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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.