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Finding the Fourth Proportional to 93,456.28, 128,965.16 and 53,166.24

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Solution

The fourth proportional to 93,456.28, 128,965.16 and 53,166.24 is: 73,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,456.28 : 128,965.16 = 53,166.24 : x
  2. Step 2: Convert to fraction form
    93,456.28/128,965.16 = 53,166.24/x
  3. Step 3: Cross multiply
    93,456.28x = 128,965.16 × 53,166.24
  4. Step 4: Simplify right side
    93,456.28x = 6,856,592,648.20
  5. Step 5: Solve for x
    x = 6,856,592,648.20/93,456.28
  6. Step 6: Final answer
    x = 73,366.85

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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.