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Finding the Fourth Proportional to 108,631.30, 162,752.55 and 93,079.30

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Solution

The fourth proportional to 108,631.30, 162,752.55 and 93,079.30 is: 139,452.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,631.30 : 162,752.55 = 93,079.30 : x
  2. Step 2: Convert to fraction form
    108,631.30/162,752.55 = 93,079.30/x
  3. Step 3: Cross multiply
    108,631.30x = 162,752.55 × 93,079.30
  4. Step 4: Simplify right side
    108,631.30x = 15,148,893,427.22
  5. Step 5: Solve for x
    x = 15,148,893,427.22/108,631.30
  6. Step 6: Final answer
    x = 139,452.38

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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.