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Finding the Fourth Proportional to 496,745.04, 745,144.56 and 141,731.76

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Solution

The fourth proportional to 496,745.04, 745,144.56 and 141,731.76 is: 212,605.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,745.04 : 745,144.56 = 141,731.76 : x
  2. Step 2: Convert to fraction form
    496,745.04/745,144.56 = 141,731.76/x
  3. Step 3: Cross multiply
    496,745.04x = 745,144.56 × 141,731.76
  4. Step 4: Simplify right side
    496,745.04x = 105,610,649,943.23
  5. Step 5: Solve for x
    x = 105,610,649,943.23/496,745.04
  6. Step 6: Final answer
    x = 212,605.34

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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.