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Finding the Fourth Proportional to 74,828.88, 112,210.26 and 28,048.94

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Solution

The fourth proportional to 74,828.88, 112,210.26 and 28,048.94 is: 42,061.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,828.88 : 112,210.26 = 28,048.94 : x
  2. Step 2: Convert to fraction form
    74,828.88/112,210.26 = 28,048.94/x
  3. Step 3: Cross multiply
    74,828.88x = 112,210.26 × 28,048.94
  4. Step 4: Simplify right side
    74,828.88x = 3,147,378,850.12
  5. Step 5: Solve for x
    x = 3,147,378,850.12/74,828.88
  6. Step 6: Final answer
    x = 42,061.02

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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.