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Finding the Fourth Proportional to 104,980.61, 144,870.30 and 57,233.94

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Solution

The fourth proportional to 104,980.61, 144,870.30 and 57,233.94 is: 78,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,980.61 : 144,870.30 = 57,233.94 : x
  2. Step 2: Convert to fraction form
    104,980.61/144,870.30 = 57,233.94/x
  3. Step 3: Cross multiply
    104,980.61x = 144,870.30 × 57,233.94
  4. Step 4: Simplify right side
    104,980.61x = 8,291,498,057.98
  5. Step 5: Solve for x
    x = 8,291,498,057.98/104,980.61
  6. Step 6: Final answer
    x = 78,981.24

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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.