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Finding the Fourth Proportional to 85,603.34, 128,392.32 and 33,006.26

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Solution

The fourth proportional to 85,603.34, 128,392.32 and 33,006.26 is: 49,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,603.34 : 128,392.32 = 33,006.26 : x
  2. Step 2: Convert to fraction form
    85,603.34/128,392.32 = 33,006.26/x
  3. Step 3: Cross multiply
    85,603.34x = 128,392.32 × 33,006.26
  4. Step 4: Simplify right side
    85,603.34x = 4,237,750,295.92
  5. Step 5: Solve for x
    x = 4,237,750,295.92/85,603.34
  6. Step 6: Final answer
    x = 49,504.50

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Half 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.