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Finding the Fourth Proportional to 108,497.85, 149,627.12 and 74,446.26

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Solution

The fourth proportional to 108,497.85, 149,627.12 and 74,446.26 is: 102,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,497.85 : 149,627.12 = 74,446.26 : x
  2. Step 2: Convert to fraction form
    108,497.85/149,627.12 = 74,446.26/x
  3. Step 3: Cross multiply
    108,497.85x = 149,627.12 × 74,446.26
  4. Step 4: Simplify right side
    108,497.85x = 11,139,179,106.34
  5. Step 5: Solve for x
    x = 11,139,179,106.34/108,497.85
  6. Step 6: Final answer
    x = 102,667.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.