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Finding the Fourth Proportional to 93,392.03, 128,880.38 and 53,105.78

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Solution

The fourth proportional to 93,392.03, 128,880.38 and 53,105.78 is: 73,285.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,392.03 : 128,880.38 = 53,105.78 : x
  2. Step 2: Convert to fraction form
    93,392.03/128,880.38 = 53,105.78/x
  3. Step 3: Cross multiply
    93,392.03x = 128,880.38 × 53,105.78
  4. Step 4: Simplify right side
    93,392.03x = 6,844,292,196.67
  5. Step 5: Solve for x
    x = 6,844,292,196.67/93,392.03
  6. Step 6: Final answer
    x = 73,285.62

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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.