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Finding the Fourth Proportional to 619,822.71, 855,361.69 and 347,885.16

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Solution

The fourth proportional to 619,822.71, 855,361.69 and 347,885.16 is: 480,085.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,822.71 : 855,361.69 = 347,885.16 : x
  2. Step 2: Convert to fraction form
    619,822.71/855,361.69 = 347,885.16/x
  3. Step 3: Cross multiply
    619,822.71x = 855,361.69 × 347,885.16
  4. Step 4: Simplify right side
    619,822.71x = 297,567,638,383.52
  5. Step 5: Solve for x
    x = 297,567,638,383.52/619,822.71
  6. Step 6: Final answer
    x = 480,085.08

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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.