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Finding the Fourth Proportional to 30,812.70, 46,219.05 and 15,260.70

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Solution

The fourth proportional to 30,812.70, 46,219.05 and 15,260.70 is: 22,891.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.70 : 46,219.05 = 15,260.70 : x
  2. Step 2: Convert to fraction form
    30,812.70/46,219.05 = 15,260.70/x
  3. Step 3: Cross multiply
    30,812.70x = 46,219.05 × 15,260.70
  4. Step 4: Simplify right side
    30,812.70x = 705,335,056.34
  5. Step 5: Solve for x
    x = 705,335,056.34/30,812.70
  6. Step 6: Final answer
    x = 22,891.05

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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.