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Finding the Fourth Proportional to 73,109.55, 109,699.19 and 39,828.88

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Solution

The fourth proportional to 73,109.55, 109,699.19 and 39,828.88 is: 59,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,109.55 : 109,699.19 = 39,828.88 : x
  2. Step 2: Convert to fraction form
    73,109.55/109,699.19 = 39,828.88/x
  3. Step 3: Cross multiply
    73,109.55x = 109,699.19 × 39,828.88
  4. Step 4: Simplify right side
    73,109.55x = 4,369,196,185.98
  5. Step 5: Solve for x
    x = 4,369,196,185.98/73,109.55
  6. Step 6: Final answer
    x = 59,762.32

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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.