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Finding the Fourth Proportional to 52,698.53, 79,047.93 and 21,533.78

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Solution

The fourth proportional to 52,698.53, 79,047.93 and 21,533.78 is: 32,300.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,698.53 : 79,047.93 = 21,533.78 : x
  2. Step 2: Convert to fraction form
    52,698.53/79,047.93 = 21,533.78/x
  3. Step 3: Cross multiply
    52,698.53x = 79,047.93 × 21,533.78
  4. Step 4: Simplify right side
    52,698.53x = 1,702,200,734.08
  5. Step 5: Solve for x
    x = 1,702,200,734.08/52,698.53
  6. Step 6: Final answer
    x = 32,300.73

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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.