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Finding the Fourth Proportional to 108,038.72, 162,038.48 and 29,134.49

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Solution

The fourth proportional to 108,038.72, 162,038.48 and 29,134.49 is: 43,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,038.72 : 162,038.48 = 29,134.49 : x
  2. Step 2: Convert to fraction form
    108,038.72/162,038.48 = 29,134.49/x
  3. Step 3: Cross multiply
    108,038.72x = 162,038.48 × 29,134.49
  4. Step 4: Simplify right side
    108,038.72x = 4,720,908,475.18
  5. Step 5: Solve for x
    x = 4,720,908,475.18/108,038.72
  6. Step 6: Final answer
    x = 43,696.45

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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.