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Finding the Fourth Proportional to 74,021.80, 103,863.80 and 74,021.80

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Solution

The fourth proportional to 74,021.80, 103,863.80 and 74,021.80 is: 103,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,021.80 : 103,863.80 = 74,021.80 : x
  2. Step 2: Convert to fraction form
    74,021.80/103,863.80 = 74,021.80/x
  3. Step 3: Cross multiply
    74,021.80x = 103,863.80 × 74,021.80
  4. Step 4: Simplify right side
    74,021.80x = 7,688,185,430.84
  5. Step 5: Solve for x
    x = 7,688,185,430.84/74,021.80
  6. Step 6: Final answer
    x = 103,863.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.