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Finding the Fourth Proportional to 619,873.02, 855,437.40 and 347,960.52

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Solution

The fourth proportional to 619,873.02, 855,437.40 and 347,960.52 is: 480,192.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,873.02 : 855,437.40 = 347,960.52 : x
  2. Step 2: Convert to fraction form
    619,873.02/855,437.40 = 347,960.52/x
  3. Step 3: Cross multiply
    619,873.02x = 855,437.40 × 347,960.52
  4. Step 4: Simplify right side
    619,873.02x = 297,658,442,531.45
  5. Step 5: Solve for x
    x = 297,658,442,531.45/619,873.02
  6. Step 6: Final answer
    x = 480,192.61

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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.