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Finding the Fourth Proportional to 108,056.80, 161,890.80 and 92,504.80

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Solution

The fourth proportional to 108,056.80, 161,890.80 and 92,504.80 is: 138,590.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,056.80 : 161,890.80 = 92,504.80 : x
  2. Step 2: Convert to fraction form
    108,056.80/161,890.80 = 92,504.80/x
  3. Step 3: Cross multiply
    108,056.80x = 161,890.80 × 92,504.80
  4. Step 4: Simplify right side
    108,056.80x = 14,975,676,075.84
  5. Step 5: Solve for x
    x = 14,975,676,075.84/108,056.80
  6. Step 6: Final answer
    x = 138,590.78

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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.