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Finding the Fourth Proportional to 108,628.38, 162,987.57 and 58,649.74

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Solution

The fourth proportional to 108,628.38, 162,987.57 and 58,649.74 is: 87,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,628.38 : 162,987.57 = 58,649.74 : x
  2. Step 2: Convert to fraction form
    108,628.38/162,987.57 = 58,649.74/x
  3. Step 3: Cross multiply
    108,628.38x = 162,987.57 × 58,649.74
  4. Step 4: Simplify right side
    108,628.38x = 9,559,178,196.26
  5. Step 5: Solve for x
    x = 9,559,178,196.26/108,628.38
  6. Step 6: Final answer
    x = 87,998.90

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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.