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Finding the Fourth Proportional to 54,130.50, 74,694.84 and 33,980.94

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Solution

The fourth proportional to 54,130.50, 74,694.84 and 33,980.94 is: 46,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,130.50 : 74,694.84 = 33,980.94 : x
  2. Step 2: Convert to fraction form
    54,130.50/74,694.84 = 33,980.94/x
  3. Step 3: Cross multiply
    54,130.50x = 74,694.84 × 33,980.94
  4. Step 4: Simplify right side
    54,130.50x = 2,538,200,876.35
  5. Step 5: Solve for x
    x = 2,538,200,876.35/54,130.50
  6. Step 6: Final answer
    x = 46,890.40

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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.