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Finding the Fourth Proportional to 18,737.58, 25,822.28 and 13,423.17

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Solution

The fourth proportional to 18,737.58, 25,822.28 and 13,423.17 is: 18,498.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,737.58 : 25,822.28 = 13,423.17 : x
  2. Step 2: Convert to fraction form
    18,737.58/25,822.28 = 13,423.17/x
  3. Step 3: Cross multiply
    18,737.58x = 25,822.28 × 13,423.17
  4. Step 4: Simplify right side
    18,737.58x = 346,616,887.79
  5. Step 5: Solve for x
    x = 346,616,887.79/18,737.58
  6. Step 6: Final answer
    x = 18,498.49

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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.