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Finding the Fourth Proportional to 45,992.88, 68,931.61 and 19,666.67

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Solution

The fourth proportional to 45,992.88, 68,931.61 and 19,666.67 is: 29,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,992.88 : 68,931.61 = 19,666.67 : x
  2. Step 2: Convert to fraction form
    45,992.88/68,931.61 = 19,666.67/x
  3. Step 3: Cross multiply
    45,992.88x = 68,931.61 × 19,666.67
  4. Step 4: Simplify right side
    45,992.88x = 1,355,654,832.61
  5. Step 5: Solve for x
    x = 1,355,654,832.61/45,992.88
  6. Step 6: Final answer
    x = 29,475.32

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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.