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Finding the Fourth Proportional to 64,824.80, 89,458.28 and 35,016.80

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Solution

The fourth proportional to 64,824.80, 89,458.28 and 35,016.80 is: 48,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,824.80 : 89,458.28 = 35,016.80 : x
  2. Step 2: Convert to fraction form
    64,824.80/89,458.28 = 35,016.80/x
  3. Step 3: Cross multiply
    64,824.80x = 89,458.28 × 35,016.80
  4. Step 4: Simplify right side
    64,824.80x = 3,132,542,699.10
  5. Step 5: Solve for x
    x = 3,132,542,699.10/64,824.80
  6. Step 6: Final answer
    x = 48,323.21

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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.