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Finding the Fourth Proportional to 555,609.44, 766,695.54 and 313,913

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Solution

The fourth proportional to 555,609.44, 766,695.54 and 313,913 is: 433,174.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,609.44 : 766,695.54 = 313,913 : x
  2. Step 2: Convert to fraction form
    555,609.44/766,695.54 = 313,913/x
  3. Step 3: Cross multiply
    555,609.44x = 766,695.54 × 313,913
  4. Step 4: Simplify right side
    555,609.44x = 240,675,697,048.02
  5. Step 5: Solve for x
    x = 240,675,697,048.02/555,609.44
  6. Step 6: Final answer
    x = 433,174.24

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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.