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Finding the Fourth Proportional to 519,661.53, 779,514.14 and 253,645.79

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Solution

The fourth proportional to 519,661.53, 779,514.14 and 253,645.79 is: 380,479.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,661.53 : 779,514.14 = 253,645.79 : x
  2. Step 2: Convert to fraction form
    519,661.53/779,514.14 = 253,645.79/x
  3. Step 3: Cross multiply
    519,661.53x = 779,514.14 × 253,645.79
  4. Step 4: Simplify right side
    519,661.53x = 197,720,474,690.67
  5. Step 5: Solve for x
    x = 197,720,474,690.67/519,661.53
  6. Step 6: Final answer
    x = 380,479.34

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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.