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Finding the Fourth Proportional to 115,311.44, 172,967.16 and 53,034.32

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Solution

The fourth proportional to 115,311.44, 172,967.16 and 53,034.32 is: 79,551.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,311.44 : 172,967.16 = 53,034.32 : x
  2. Step 2: Convert to fraction form
    115,311.44/172,967.16 = 53,034.32/x
  3. Step 3: Cross multiply
    115,311.44x = 172,967.16 × 53,034.32
  4. Step 4: Simplify right side
    115,311.44x = 9,173,195,712.93
  5. Step 5: Solve for x
    x = 9,173,195,712.93/115,311.44
  6. Step 6: Final answer
    x = 79,551.48

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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.