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Finding the Fourth Proportional to 108,409.52, 162,609.26 and 28,445.51

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Solution

The fourth proportional to 108,409.52, 162,609.26 and 28,445.51 is: 42,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,409.52 : 162,609.26 = 28,445.51 : x
  2. Step 2: Convert to fraction form
    108,409.52/162,609.26 = 28,445.51/x
  3. Step 3: Cross multiply
    108,409.52x = 162,609.26 × 28,445.51
  4. Step 4: Simplify right side
    108,409.52x = 4,625,502,996.01
  5. Step 5: Solve for x
    x = 4,625,502,996.01/108,409.52
  6. Step 6: Final answer
    x = 42,666.95

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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.