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Finding the Fourth Proportional to 555,537.35, 766,703.86 and 313,835.49

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Solution

The fourth proportional to 555,537.35, 766,703.86 and 313,835.49 is: 433,128.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,537.35 : 766,703.86 = 313,835.49 : x
  2. Step 2: Convert to fraction form
    555,537.35/766,703.86 = 313,835.49/x
  3. Step 3: Cross multiply
    555,537.35x = 766,703.86 × 313,835.49
  4. Step 4: Simplify right side
    555,537.35x = 240,618,883,678.54
  5. Step 5: Solve for x
    x = 240,618,883,678.54/555,537.35
  6. Step 6: Final answer
    x = 433,128.18

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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.