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Finding the Fourth Proportional to 524,605.79, 786,929.18 and 165,021.98

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Solution

The fourth proportional to 524,605.79, 786,929.18 and 165,021.98 is: 247,539.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,605.79 : 786,929.18 = 165,021.98 : x
  2. Step 2: Convert to fraction form
    524,605.79/786,929.18 = 165,021.98/x
  3. Step 3: Cross multiply
    524,605.79x = 786,929.18 × 165,021.98
  4. Step 4: Simplify right side
    524,605.79x = 129,860,606,643.62
  5. Step 5: Solve for x
    x = 129,860,606,643.62/524,605.79
  6. Step 6: Final answer
    x = 247,539.41

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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.