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Finding the Fourth Proportional to 108,615.96, 149,732.96 and 76,252.03

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Solution

The fourth proportional to 108,615.96, 149,732.96 and 76,252.03 is: 105,117.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,615.96 : 149,732.96 = 76,252.03 : x
  2. Step 2: Convert to fraction form
    108,615.96/149,732.96 = 76,252.03/x
  3. Step 3: Cross multiply
    108,615.96x = 149,732.96 × 76,252.03
  4. Step 4: Simplify right side
    108,615.96x = 11,417,441,402.32
  5. Step 5: Solve for x
    x = 11,417,441,402.32/108,615.96
  6. Step 6: Final answer
    x = 105,117.53

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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.