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Finding the Fourth Proportional to 93,324.13, 128,764.21 and 57,016.23

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Solution

The fourth proportional to 93,324.13, 128,764.21 and 57,016.23 is: 78,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,324.13 : 128,764.21 = 57,016.23 : x
  2. Step 2: Convert to fraction form
    93,324.13/128,764.21 = 57,016.23/x
  3. Step 3: Cross multiply
    93,324.13x = 128,764.21 × 57,016.23
  4. Step 4: Simplify right side
    93,324.13x = 7,341,649,528.05
  5. Step 5: Solve for x
    x = 7,341,649,528.05/93,324.13
  6. Step 6: Final answer
    x = 78,668.29

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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.