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Finding the Fourth Proportional to 108,551.80, 162,827.70 and 91,055.80

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Solution

The fourth proportional to 108,551.80, 162,827.70 and 91,055.80 is: 136,583.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,551.80 : 162,827.70 = 91,055.80 : x
  2. Step 2: Convert to fraction form
    108,551.80/162,827.70 = 91,055.80/x
  3. Step 3: Cross multiply
    108,551.80x = 162,827.70 × 91,055.80
  4. Step 4: Simplify right side
    108,551.80x = 14,826,406,485.66
  5. Step 5: Solve for x
    x = 14,826,406,485.66/108,551.80
  6. Step 6: Final answer
    x = 136,583.70

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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.