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Finding the Fourth Proportional to 93,382.20, 128,873.53 and 53,099.71

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Solution

The fourth proportional to 93,382.20, 128,873.53 and 53,099.71 is: 73,281.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,382.20 : 128,873.53 = 53,099.71 : x
  2. Step 2: Convert to fraction form
    93,382.20/128,873.53 = 53,099.71/x
  3. Step 3: Cross multiply
    93,382.20x = 128,873.53 × 53,099.71
  4. Step 4: Simplify right side
    93,382.20x = 6,843,147,720.01
  5. Step 5: Solve for x
    x = 6,843,147,720.01/93,382.20
  6. Step 6: Final answer
    x = 73,281.07

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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.