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Finding the Fourth Proportional to 74,658.65, 103,021.44 and 45,973.71

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Solution

The fourth proportional to 74,658.65, 103,021.44 and 45,973.71 is: 63,439.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,658.65 : 103,021.44 = 45,973.71 : x
  2. Step 2: Convert to fraction form
    74,658.65/103,021.44 = 45,973.71/x
  3. Step 3: Cross multiply
    74,658.65x = 103,021.44 × 45,973.71
  4. Step 4: Simplify right side
    74,658.65x = 4,736,277,806.34
  5. Step 5: Solve for x
    x = 4,736,277,806.34/74,658.65
  6. Step 6: Final answer
    x = 63,439.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.