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Finding the Fourth Proportional to 347,893.91, 480,386.19 and 261,703.50

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Solution

The fourth proportional to 347,893.91, 480,386.19 and 261,703.50 is: 361,370.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,893.91 : 480,386.19 = 261,703.50 : x
  2. Step 2: Convert to fraction form
    347,893.91/480,386.19 = 261,703.50/x
  3. Step 3: Cross multiply
    347,893.91x = 480,386.19 × 261,703.50
  4. Step 4: Simplify right side
    347,893.91x = 125,718,747,274.67
  5. Step 5: Solve for x
    x = 125,718,747,274.67/347,893.91
  6. Step 6: Final answer
    x = 361,370.93

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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.