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Finding the Fourth Proportional to 451,085.51, 622,344.74 and 257,354.05

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Solution

The fourth proportional to 451,085.51, 622,344.74 and 257,354.05 is: 355,061.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,085.51 : 622,344.74 = 257,354.05 : x
  2. Step 2: Convert to fraction form
    451,085.51/622,344.74 = 257,354.05/x
  3. Step 3: Cross multiply
    451,085.51x = 622,344.74 × 257,354.05
  4. Step 4: Simplify right side
    451,085.51x = 160,162,939,335.20
  5. Step 5: Solve for x
    x = 160,162,939,335.20/451,085.51
  6. Step 6: Final answer
    x = 355,061.15

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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.