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Finding the Fourth Proportional to 93,294.38, 128,746.48 and 53,021.54

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Solution

The fourth proportional to 93,294.38, 128,746.48 and 53,021.54 is: 73,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,294.38 : 128,746.48 = 53,021.54 : x
  2. Step 2: Convert to fraction form
    93,294.38/128,746.48 = 53,021.54/x
  3. Step 3: Cross multiply
    93,294.38x = 128,746.48 × 53,021.54
  4. Step 4: Simplify right side
    93,294.38x = 6,826,336,639.18
  5. Step 5: Solve for x
    x = 6,826,336,639.18/93,294.38
  6. Step 6: Final answer
    x = 73,169.86

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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.