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Finding the Fourth Proportional to 108,502.70, 162,501.33 and 105,513.08

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Solution

The fourth proportional to 108,502.70, 162,501.33 and 105,513.08 is: 158,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,502.70 : 162,501.33 = 105,513.08 : x
  2. Step 2: Convert to fraction form
    108,502.70/162,501.33 = 105,513.08/x
  3. Step 3: Cross multiply
    108,502.70x = 162,501.33 × 105,513.08
  4. Step 4: Simplify right side
    108,502.70x = 17,146,015,832.40
  5. Step 5: Solve for x
    x = 17,146,015,832.40/108,502.70
  6. Step 6: Final answer
    x = 158,023.86

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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.