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Finding the Fourth Proportional to 93,005.60, 128,348.24 and 54,766.80

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Solution

The fourth proportional to 93,005.60, 128,348.24 and 54,766.80 is: 75,578.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,005.60 : 128,348.24 = 54,766.80 : x
  2. Step 2: Convert to fraction form
    93,005.60/128,348.24 = 54,766.80/x
  3. Step 3: Cross multiply
    93,005.60x = 128,348.24 × 54,766.80
  4. Step 4: Simplify right side
    93,005.60x = 7,029,222,390.43
  5. Step 5: Solve for x
    x = 7,029,222,390.43/93,005.60
  6. Step 6: Final answer
    x = 75,578.49

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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.