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Finding the Fourth Proportional to 104,957.69, 144,840.50 and 57,210.02

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Solution

The fourth proportional to 104,957.69, 144,840.50 and 57,210.02 is: 78,949.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,957.69 : 144,840.50 = 57,210.02 : x
  2. Step 2: Convert to fraction form
    104,957.69/144,840.50 = 57,210.02/x
  3. Step 3: Cross multiply
    104,957.69x = 144,840.50 × 57,210.02
  4. Step 4: Simplify right side
    104,957.69x = 8,286,326,891.56
  5. Step 5: Solve for x
    x = 8,286,326,891.56/104,957.69
  6. Step 6: Final answer
    x = 78,949.22

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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.