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Finding the Fourth Proportional to 81,475.08, 112,434.60 and 45,665.04

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Solution

The fourth proportional to 81,475.08, 112,434.60 and 45,665.04 is: 63,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,475.08 : 112,434.60 = 45,665.04 : x
  2. Step 2: Convert to fraction form
    81,475.08/112,434.60 = 45,665.04/x
  3. Step 3: Cross multiply
    81,475.08x = 112,434.60 × 45,665.04
  4. Step 4: Simplify right side
    81,475.08x = 5,134,330,506.38
  5. Step 5: Solve for x
    x = 5,134,330,506.38/81,475.08
  6. Step 6: Final answer
    x = 63,017.19

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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.