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Finding the Fourth Proportional to 18,498.84, 25,530.56 and 10,542.40

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Solution

The fourth proportional to 18,498.84, 25,530.56 and 10,542.40 is: 14,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.84 : 25,530.56 = 10,542.40 : x
  2. Step 2: Convert to fraction form
    18,498.84/25,530.56 = 10,542.40/x
  3. Step 3: Cross multiply
    18,498.84x = 25,530.56 × 10,542.40
  4. Step 4: Simplify right side
    18,498.84x = 269,153,375.74
  5. Step 5: Solve for x
    x = 269,153,375.74/18,498.84
  6. Step 6: Final answer
    x = 14,549.74

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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.