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Finding the Fourth Proportional to 46,831.88, 70,247.88 and 19,129.88

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Solution

The fourth proportional to 46,831.88, 70,247.88 and 19,129.88 is: 28,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,831.88 : 70,247.88 = 19,129.88 : x
  2. Step 2: Convert to fraction form
    46,831.88/70,247.88 = 19,129.88/x
  3. Step 3: Cross multiply
    46,831.88x = 70,247.88 × 19,129.88
  4. Step 4: Simplify right side
    46,831.88x = 1,343,833,163.42
  5. Step 5: Solve for x
    x = 1,343,833,163.42/46,831.88
  6. Step 6: Final answer
    x = 28,694.84

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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.