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Finding the Fourth Proportional to 93,382.58, 128,874.05 and 53,100.09

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Solution

The fourth proportional to 93,382.58, 128,874.05 and 53,100.09 is: 73,281.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,382.58 : 128,874.05 = 53,100.09 : x
  2. Step 2: Convert to fraction form
    93,382.58/128,874.05 = 53,100.09/x
  3. Step 3: Cross multiply
    93,382.58x = 128,874.05 × 53,100.09
  4. Step 4: Simplify right side
    93,382.58x = 6,843,223,653.66
  5. Step 5: Solve for x
    x = 6,843,223,653.66/93,382.58
  6. Step 6: Final answer
    x = 73,281.59

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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.