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Finding the Fourth Proportional to 14,543.40, 21,803.76 and 6,751.20

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Solution

The fourth proportional to 14,543.40, 21,803.76 and 6,751.20 is: 10,121.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,543.40 : 21,803.76 = 6,751.20 : x
  2. Step 2: Convert to fraction form
    14,543.40/21,803.76 = 6,751.20/x
  3. Step 3: Cross multiply
    14,543.40x = 21,803.76 × 6,751.20
  4. Step 4: Simplify right side
    14,543.40x = 147,201,544.51
  5. Step 5: Solve for x
    x = 147,201,544.51/14,543.40
  6. Step 6: Final answer
    x = 10,121.54

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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.