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Finding the Fourth Proportional to 108,748.80, 162,928.80 and 93,196.80

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Solution

The fourth proportional to 108,748.80, 162,928.80 and 93,196.80 is: 139,628.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,748.80 : 162,928.80 = 93,196.80 : x
  2. Step 2: Convert to fraction form
    108,748.80/162,928.80 = 93,196.80/x
  3. Step 3: Cross multiply
    108,748.80x = 162,928.80 × 93,196.80
  4. Step 4: Simplify right side
    108,748.80x = 15,184,442,787.84
  5. Step 5: Solve for x
    x = 15,184,442,787.84/108,748.80
  6. Step 6: Final answer
    x = 139,628.60

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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.