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Finding the Fourth Proportional to 14,303.75, 21,458.87 and 5,069.75

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Solution

The fourth proportional to 14,303.75, 21,458.87 and 5,069.75 is: 7,605.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,303.75 : 21,458.87 = 5,069.75 : x
  2. Step 2: Convert to fraction form
    14,303.75/21,458.87 = 5,069.75/x
  3. Step 3: Cross multiply
    14,303.75x = 21,458.87 × 5,069.75
  4. Step 4: Simplify right side
    14,303.75x = 108,791,106.18
  5. Step 5: Solve for x
    x = 108,791,106.18/14,303.75
  6. Step 6: Final answer
    x = 7,605.78

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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.