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Finding the Fourth Proportional to 65,934.36, 90,998.70 and 37,641.72

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Solution

The fourth proportional to 65,934.36, 90,998.70 and 37,641.72 is: 51,950.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,934.36 : 90,998.70 = 37,641.72 : x
  2. Step 2: Convert to fraction form
    65,934.36/90,998.70 = 37,641.72/x
  3. Step 3: Cross multiply
    65,934.36x = 90,998.70 × 37,641.72
  4. Step 4: Simplify right side
    65,934.36x = 3,425,347,585.76
  5. Step 5: Solve for x
    x = 3,425,347,585.76/65,934.36
  6. Step 6: Final answer
    x = 51,950.87

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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.