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Finding the Fourth Proportional to 619,738.74, 855,256.44 and 347,823.48

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Solution

The fourth proportional to 619,738.74, 855,256.44 and 347,823.48 is: 480,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,738.74 : 855,256.44 = 347,823.48 : x
  2. Step 2: Convert to fraction form
    619,738.74/855,256.44 = 347,823.48/x
  3. Step 3: Cross multiply
    619,738.74x = 855,256.44 × 347,823.48
  4. Step 4: Simplify right side
    619,738.74x = 297,478,271,253.21
  5. Step 5: Solve for x
    x = 297,478,271,253.21/619,738.74
  6. Step 6: Final answer
    x = 480,005.93

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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.