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Finding the Fourth Proportional to 311,548.15, 429,939.12 and 175,556.04

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Solution

The fourth proportional to 311,548.15, 429,939.12 and 175,556.04 is: 242,268.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,548.15 : 429,939.12 = 175,556.04 : x
  2. Step 2: Convert to fraction form
    311,548.15/429,939.12 = 175,556.04/x
  3. Step 3: Cross multiply
    311,548.15x = 429,939.12 × 175,556.04
  4. Step 4: Simplify right side
    311,548.15x = 75,478,409,348.28
  5. Step 5: Solve for x
    x = 75,478,409,348.28/311,548.15
  6. Step 6: Final answer
    x = 242,268.84

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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.