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Finding the Fourth Proportional to 65,145.51, 89,902.85 and 36,849.38

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Solution

The fourth proportional to 65,145.51, 89,902.85 and 36,849.38 is: 50,853.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,145.51 : 89,902.85 = 36,849.38 : x
  2. Step 2: Convert to fraction form
    65,145.51/89,902.85 = 36,849.38/x
  3. Step 3: Cross multiply
    65,145.51x = 89,902.85 × 36,849.38
  4. Step 4: Simplify right side
    65,145.51x = 3,312,863,648.97
  5. Step 5: Solve for x
    x = 3,312,863,648.97/65,145.51
  6. Step 6: Final answer
    x = 50,853.29

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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.