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Finding the Fourth Proportional to 64,839.98, 97,178.15 and 34,779.67

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Solution

The fourth proportional to 64,839.98, 97,178.15 and 34,779.67 is: 52,125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,839.98 : 97,178.15 = 34,779.67 : x
  2. Step 2: Convert to fraction form
    64,839.98/97,178.15 = 34,779.67/x
  3. Step 3: Cross multiply
    64,839.98x = 97,178.15 × 34,779.67
  4. Step 4: Simplify right side
    64,839.98x = 3,379,823,832.21
  5. Step 5: Solve for x
    x = 3,379,823,832.21/64,839.98
  6. Step 6: Final answer
    x = 52,125.61

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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.