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Finding the Fourth Proportional to 61,515.40, 84,894.78 and 37,635.40

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Solution

The fourth proportional to 61,515.40, 84,894.78 and 37,635.40 is: 51,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,515.40 : 84,894.78 = 37,635.40 : x
  2. Step 2: Convert to fraction form
    61,515.40/84,894.78 = 37,635.40/x
  3. Step 3: Cross multiply
    61,515.40x = 84,894.78 × 37,635.40
  4. Step 4: Simplify right side
    61,515.40x = 3,195,049,003.21
  5. Step 5: Solve for x
    x = 3,195,049,003.21/61,515.40
  6. Step 6: Final answer
    x = 51,939.01

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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.