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Finding the Fourth Proportional to 93,217.92, 128,688.39 and 63,162.06

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Solution

The fourth proportional to 93,217.92, 128,688.39 and 63,162.06 is: 87,195.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,217.92 : 128,688.39 = 63,162.06 : x
  2. Step 2: Convert to fraction form
    93,217.92/128,688.39 = 63,162.06/x
  3. Step 3: Cross multiply
    93,217.92x = 128,688.39 × 63,162.06
  4. Step 4: Simplify right side
    93,217.92x = 8,128,223,810.48
  5. Step 5: Solve for x
    x = 8,128,223,810.48/93,217.92
  6. Step 6: Final answer
    x = 87,195.94

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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.