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Finding the Fourth Proportional to 82,798.61, 124,087.75 and 45,302.09

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Solution

The fourth proportional to 82,798.61, 124,087.75 and 45,302.09 is: 67,892.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,798.61 : 124,087.75 = 45,302.09 : x
  2. Step 2: Convert to fraction form
    82,798.61/124,087.75 = 45,302.09/x
  3. Step 3: Cross multiply
    82,798.61x = 124,087.75 × 45,302.09
  4. Step 4: Simplify right side
    82,798.61x = 5,621,433,684.70
  5. Step 5: Solve for x
    x = 5,621,433,684.70/82,798.61
  6. Step 6: Final answer
    x = 67,892.86

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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.