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Finding the Fourth Proportional to 71,658.53, 107,487.64 and 19,068.01

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Solution

The fourth proportional to 71,658.53, 107,487.64 and 19,068.01 is: 28,601.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,658.53 : 107,487.64 = 19,068.01 : x
  2. Step 2: Convert to fraction form
    71,658.53/107,487.64 = 19,068.01/x
  3. Step 3: Cross multiply
    71,658.53x = 107,487.64 × 19,068.01
  4. Step 4: Simplify right side
    71,658.53x = 2,049,575,394.40
  5. Step 5: Solve for x
    x = 2,049,575,394.40/71,658.53
  6. Step 6: Final answer
    x = 28,601.97

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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.