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Finding the Fourth Proportional to 38,980.50, 58,496.70 and 14,356.50

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Solution

The fourth proportional to 38,980.50, 58,496.70 and 14,356.50 is: 21,544.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,980.50 : 58,496.70 = 14,356.50 : x
  2. Step 2: Convert to fraction form
    38,980.50/58,496.70 = 14,356.50/x
  3. Step 3: Cross multiply
    38,980.50x = 58,496.70 × 14,356.50
  4. Step 4: Simplify right side
    38,980.50x = 839,807,873.55
  5. Step 5: Solve for x
    x = 839,807,873.55/38,980.50
  6. Step 6: Final answer
    x = 21,544.31

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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.