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Finding the Fourth Proportional to 619,779.84, 855,260.20 and 347,822.32

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Solution

The fourth proportional to 619,779.84, 855,260.20 and 347,822.32 is: 479,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,779.84 : 855,260.20 = 347,822.32 : x
  2. Step 2: Convert to fraction form
    619,779.84/855,260.20 = 347,822.32/x
  3. Step 3: Cross multiply
    619,779.84x = 855,260.20 × 347,822.32
  4. Step 4: Simplify right side
    619,779.84x = 297,478,586,967.66
  5. Step 5: Solve for x
    x = 297,478,586,967.66/619,779.84
  6. Step 6: Final answer
    x = 479,974.61

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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.