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Finding the Fourth Proportional to 89,858.60, 124,004.51 and 49,574.87

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Solution

The fourth proportional to 89,858.60, 124,004.51 and 49,574.87 is: 68,413.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,858.60 : 124,004.51 = 49,574.87 : x
  2. Step 2: Convert to fraction form
    89,858.60/124,004.51 = 49,574.87/x
  3. Step 3: Cross multiply
    89,858.60x = 124,004.51 × 49,574.87
  4. Step 4: Simplify right side
    89,858.60x = 6,147,507,462.66
  5. Step 5: Solve for x
    x = 6,147,507,462.66/89,858.60
  6. Step 6: Final answer
    x = 68,413.12

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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.