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Finding the Fourth Proportional to 93,392.03, 128,880.38 and 53,105.79

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Solution

The fourth proportional to 93,392.03, 128,880.38 and 53,105.79 is: 73,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,392.03 : 128,880.38 = 53,105.79 : x
  2. Step 2: Convert to fraction form
    93,392.03/128,880.38 = 53,105.79/x
  3. Step 3: Cross multiply
    93,392.03x = 128,880.38 × 53,105.79
  4. Step 4: Simplify right side
    93,392.03x = 6,844,294,129.87
  5. Step 5: Solve for x
    x = 6,844,294,129.87/93,392.03
  6. Step 6: Final answer
    x = 73,285.64

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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.