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Finding the Fourth Proportional to 108,652.20, 163,051.20 and 64,231.80

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Solution

The fourth proportional to 108,652.20, 163,051.20 and 64,231.80 is: 96,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,652.20 : 163,051.20 = 64,231.80 : x
  2. Step 2: Convert to fraction form
    108,652.20/163,051.20 = 64,231.80/x
  3. Step 3: Cross multiply
    108,652.20x = 163,051.20 × 64,231.80
  4. Step 4: Simplify right side
    108,652.20x = 10,473,072,068.16
  5. Step 5: Solve for x
    x = 10,473,072,068.16/108,652.20
  6. Step 6: Final answer
    x = 96,390.80

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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.