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Finding the Fourth Proportional to 48,866.60, 73,292.70 and 13,809.80

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Solution

The fourth proportional to 48,866.60, 73,292.70 and 13,809.80 is: 20,712.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,866.60 : 73,292.70 = 13,809.80 : x
  2. Step 2: Convert to fraction form
    48,866.60/73,292.70 = 13,809.80/x
  3. Step 3: Cross multiply
    48,866.60x = 73,292.70 × 13,809.80
  4. Step 4: Simplify right side
    48,866.60x = 1,012,157,528.46
  5. Step 5: Solve for x
    x = 1,012,157,528.46/48,866.60
  6. Step 6: Final answer
    x = 20,712.67

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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.