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Finding the Fourth Proportional to 55,047.74, 82,561.88 and 21,756.74

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Solution

The fourth proportional to 55,047.74, 82,561.88 and 21,756.74 is: 32,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,047.74 : 82,561.88 = 21,756.74 : x
  2. Step 2: Convert to fraction form
    55,047.74/82,561.88 = 21,756.74/x
  3. Step 3: Cross multiply
    55,047.74x = 82,561.88 × 21,756.74
  4. Step 4: Simplify right side
    55,047.74x = 1,796,276,998.65
  5. Step 5: Solve for x
    x = 1,796,276,998.65/55,047.74
  6. Step 6: Final answer
    x = 32,631.26

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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.