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Finding the Fourth Proportional to 93,451.44, 128,918.08 and 61,171.83

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Solution

The fourth proportional to 93,451.44, 128,918.08 and 61,171.83 is: 84,387.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,451.44 : 128,918.08 = 61,171.83 : x
  2. Step 2: Convert to fraction form
    93,451.44/128,918.08 = 61,171.83/x
  3. Step 3: Cross multiply
    93,451.44x = 128,918.08 × 61,171.83
  4. Step 4: Simplify right side
    93,451.44x = 7,886,154,229.10
  5. Step 5: Solve for x
    x = 7,886,154,229.10/93,451.44
  6. Step 6: Final answer
    x = 84,387.72

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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.