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Finding the Fourth Proportional to 49,975.95, 74,963.91 and 13,039.95

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Solution

The fourth proportional to 49,975.95, 74,963.91 and 13,039.95 is: 19,559.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,975.95 : 74,963.91 = 13,039.95 : x
  2. Step 2: Convert to fraction form
    49,975.95/74,963.91 = 13,039.95/x
  3. Step 3: Cross multiply
    49,975.95x = 74,963.91 × 13,039.95
  4. Step 4: Simplify right side
    49,975.95x = 977,525,638.20
  5. Step 5: Solve for x
    x = 977,525,638.20/49,975.95
  6. Step 6: Final answer
    x = 19,559.92

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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.