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Finding the Fourth Proportional to 619,775.04, 855,254.40 and 347,817.60

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Solution

The fourth proportional to 619,775.04, 855,254.40 and 347,817.60 is: 479,968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,775.04 : 855,254.40 = 347,817.60 : x
  2. Step 2: Convert to fraction form
    619,775.04/855,254.40 = 347,817.60/x
  3. Step 3: Cross multiply
    619,775.04x = 855,254.40 × 347,817.60
  4. Step 4: Simplify right side
    619,775.04x = 297,472,532,797.44
  5. Step 5: Solve for x
    x = 297,472,532,797.44/619,775.04
  6. Step 6: Final answer
    x = 479,968.56

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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.