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Finding the Fourth Proportional to 62,015.20, 85,580 and 33,720.64

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Solution

The fourth proportional to 62,015.20, 85,580 and 33,720.64 is: 46,533.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,015.20 : 85,580 = 33,720.64 : x
  2. Step 2: Convert to fraction form
    62,015.20/85,580 = 33,720.64/x
  3. Step 3: Cross multiply
    62,015.20x = 85,580 × 33,720.64
  4. Step 4: Simplify right side
    62,015.20x = 2,885,812,371.20
  5. Step 5: Solve for x
    x = 2,885,812,371.20/62,015.20
  6. Step 6: Final answer
    x = 46,533.95

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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.