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Finding the Fourth Proportional to 91,879.11, 137,831.63 and 32,700.51

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Solution

The fourth proportional to 91,879.11, 137,831.63 and 32,700.51 is: 49,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,879.11 : 137,831.63 = 32,700.51 : x
  2. Step 2: Convert to fraction form
    91,879.11/137,831.63 = 32,700.51/x
  3. Step 3: Cross multiply
    91,879.11x = 137,831.63 × 32,700.51
  4. Step 4: Simplify right side
    91,879.11x = 4,507,164,431.63
  5. Step 5: Solve for x
    x = 4,507,164,431.63/91,879.11
  6. Step 6: Final answer
    x = 49,055.38

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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.