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Finding the Fourth Proportional to 543,131.02, 749,347.43 and 313,658.00

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Solution

The fourth proportional to 543,131.02, 749,347.43 and 313,658.00 is: 432,747.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,131.02 : 749,347.43 = 313,658.00 : x
  2. Step 2: Convert to fraction form
    543,131.02/749,347.43 = 313,658.00/x
  3. Step 3: Cross multiply
    543,131.02x = 749,347.43 × 313,658.00
  4. Step 4: Simplify right side
    543,131.02x = 235,038,812,452.20
  5. Step 5: Solve for x
    x = 235,038,812,452.20/543,131.02
  6. Step 6: Final answer
    x = 432,747.91

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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.