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Finding the Fourth Proportional to 58,449.12, 80,640.04 and 33,280.80

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Solution

The fourth proportional to 58,449.12, 80,640.04 and 33,280.80 is: 45,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,449.12 : 80,640.04 = 33,280.80 : x
  2. Step 2: Convert to fraction form
    58,449.12/80,640.04 = 33,280.80/x
  3. Step 3: Cross multiply
    58,449.12x = 80,640.04 × 33,280.80
  4. Step 4: Simplify right side
    58,449.12x = 2,683,765,043.23
  5. Step 5: Solve for x
    x = 2,683,765,043.23/58,449.12
  6. Step 6: Final answer
    x = 45,916.26

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Double scale
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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.