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Finding the Fourth Proportional to 31,019.76, 46,490.76 and 15,441.84

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Solution

The fourth proportional to 31,019.76, 46,490.76 and 15,441.84 is: 23,143.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,019.76 : 46,490.76 = 15,441.84 : x
  2. Step 2: Convert to fraction form
    31,019.76/46,490.76 = 15,441.84/x
  3. Step 3: Cross multiply
    31,019.76x = 46,490.76 × 15,441.84
  4. Step 4: Simplify right side
    31,019.76x = 717,902,877.40
  5. Step 5: Solve for x
    x = 717,902,877.40/31,019.76
  6. Step 6: Final answer
    x = 23,143.41

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1.5x scale

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.