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Finding the Fourth Proportional to 64,861.28, 89,508.56 and 35,053.28

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Solution

The fourth proportional to 64,861.28, 89,508.56 and 35,053.28 is: 48,373.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,861.28 : 89,508.56 = 35,053.28 : x
  2. Step 2: Convert to fraction form
    64,861.28/89,508.56 = 35,053.28/x
  3. Step 3: Cross multiply
    64,861.28x = 89,508.56 × 35,053.28
  4. Step 4: Simplify right side
    64,861.28x = 3,137,568,616.08
  5. Step 5: Solve for x
    x = 3,137,568,616.08/64,861.28
  6. Step 6: Final answer
    x = 48,373.52

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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.