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Finding the Fourth Proportional to 18,391.01, 25,392.51 and 14,362.38

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Solution

The fourth proportional to 18,391.01, 25,392.51 and 14,362.38 is: 19,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.01 : 25,392.51 = 14,362.38 : x
  2. Step 2: Convert to fraction form
    18,391.01/25,392.51 = 14,362.38/x
  3. Step 3: Cross multiply
    18,391.01x = 25,392.51 × 14,362.38
  4. Step 4: Simplify right side
    18,391.01x = 364,696,877.77
  5. Step 5: Solve for x
    x = 364,696,877.77/18,391.01
  6. Step 6: Final answer
    x = 19,830.18

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Half scale
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Double scale
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Similar ratio
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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.