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Finding the Fourth Proportional to 18,697.78, 25,803.48 and 10,200.58

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Solution

The fourth proportional to 18,697.78, 25,803.48 and 10,200.58 is: 14,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.78 : 25,803.48 = 10,200.58 : x
  2. Step 2: Convert to fraction form
    18,697.78/25,803.48 = 10,200.58/x
  3. Step 3: Cross multiply
    18,697.78x = 25,803.48 × 10,200.58
  4. Step 4: Simplify right side
    18,697.78x = 263,210,462.02
  5. Step 5: Solve for x
    x = 263,210,462.02/18,697.78
  6. Step 6: Final answer
    x = 14,077.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.