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Finding the Fourth Proportional to 518,751.51, 778,207.77 and 219,233.40

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Solution

The fourth proportional to 518,751.51, 778,207.77 and 219,233.40 is: 328,884.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,751.51 : 778,207.77 = 219,233.40 : x
  2. Step 2: Convert to fraction form
    518,751.51/778,207.77 = 219,233.40/x
  3. Step 3: Cross multiply
    518,751.51x = 778,207.77 × 219,233.40
  4. Step 4: Simplify right side
    518,751.51x = 170,609,135,323.52
  5. Step 5: Solve for x
    x = 170,609,135,323.52/518,751.51
  6. Step 6: Final answer
    x = 328,884.12

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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.