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Finding the Fourth Proportional to 547,995, 821,992.50 and 154,011

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Solution

The fourth proportional to 547,995, 821,992.50 and 154,011 is: 231,016.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,995 : 821,992.50 = 154,011 : x
  2. Step 2: Convert to fraction form
    547,995/821,992.50 = 154,011/x
  3. Step 3: Cross multiply
    547,995x = 821,992.50 × 154,011
  4. Step 4: Simplify right side
    547,995x = 126,595,886,917.50
  5. Step 5: Solve for x
    x = 126,595,886,917.50/547,995
  6. Step 6: Final answer
    x = 231,016.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.