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Finding the Fourth Proportional to 82,316.40, 123,733.80 and 76,095.60

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Solution

The fourth proportional to 82,316.40, 123,733.80 and 76,095.60 is: 114,383.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,316.40 : 123,733.80 = 76,095.60 : x
  2. Step 2: Convert to fraction form
    82,316.40/123,733.80 = 76,095.60/x
  3. Step 3: Cross multiply
    82,316.40x = 123,733.80 × 76,095.60
  4. Step 4: Simplify right side
    82,316.40x = 9,415,597,751.28
  5. Step 5: Solve for x
    x = 9,415,597,751.28/82,316.40
  6. Step 6: Final answer
    x = 114,383.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.