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Finding the Fourth Proportional to 46,719.60, 70,057.80 and 20,410.80

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Solution

The fourth proportional to 46,719.60, 70,057.80 and 20,410.80 is: 30,606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,719.60 : 70,057.80 = 20,410.80 : x
  2. Step 2: Convert to fraction form
    46,719.60/70,057.80 = 20,410.80/x
  3. Step 3: Cross multiply
    46,719.60x = 70,057.80 × 20,410.80
  4. Step 4: Simplify right side
    46,719.60x = 1,429,935,744.24
  5. Step 5: Solve for x
    x = 1,429,935,744.24/46,719.60
  6. Step 6: Final answer
    x = 30,606.76

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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.