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Finding the Fourth Proportional to 18,951.78, 26,153.58 and 10,454.22

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Solution

The fourth proportional to 18,951.78, 26,153.58 and 10,454.22 is: 14,426.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.78 : 26,153.58 = 10,454.22 : x
  2. Step 2: Convert to fraction form
    18,951.78/26,153.58 = 10,454.22/x
  3. Step 3: Cross multiply
    18,951.78x = 26,153.58 × 10,454.22
  4. Step 4: Simplify right side
    18,951.78x = 273,415,279.11
  5. Step 5: Solve for x
    x = 273,415,279.11/18,951.78
  6. Step 6: Final answer
    x = 14,426.89

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Half scale
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Double scale
Find fourth proportional to 18,952.78, 26,154.96 and 10,455.22
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.