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Finding the Fourth Proportional to 13,873.87, 20,810.20 and 4,012.93

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Solution

The fourth proportional to 13,873.87, 20,810.20 and 4,012.93 is: 6,019.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.87 : 20,810.20 = 4,012.93 : x
  2. Step 2: Convert to fraction form
    13,873.87/20,810.20 = 4,012.93/x
  3. Step 3: Cross multiply
    13,873.87x = 20,810.20 × 4,012.93
  4. Step 4: Simplify right side
    13,873.87x = 83,509,875.89
  5. Step 5: Solve for x
    x = 83,509,875.89/13,873.87
  6. Step 6: Final answer
    x = 6,019.22

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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.