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Finding the Fourth Proportional to 518,772.51, 778,239.23 and 219,254.36

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Solution

The fourth proportional to 518,772.51, 778,239.23 and 219,254.36 is: 328,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,772.51 : 778,239.23 = 219,254.36 : x
  2. Step 2: Convert to fraction form
    518,772.51/778,239.23 = 219,254.36/x
  3. Step 3: Cross multiply
    518,772.51x = 778,239.23 × 219,254.36
  4. Step 4: Simplify right side
    518,772.51x = 170,632,339,313.08
  5. Step 5: Solve for x
    x = 170,632,339,313.08/518,772.51
  6. Step 6: Final answer
    x = 328,915.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.