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Finding the Fourth Proportional to 74,495.70, 111,743.55 and 69,574.95

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Solution

The fourth proportional to 74,495.70, 111,743.55 and 69,574.95 is: 104,362.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,495.70 : 111,743.55 = 69,574.95 : x
  2. Step 2: Convert to fraction form
    74,495.70/111,743.55 = 69,574.95/x
  3. Step 3: Cross multiply
    74,495.70x = 111,743.55 × 69,574.95
  4. Step 4: Simplify right side
    74,495.70x = 7,774,551,904.07
  5. Step 5: Solve for x
    x = 7,774,551,904.07/74,495.70
  6. Step 6: Final answer
    x = 104,362.43

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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.