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Finding the Fourth Proportional to 61,785.72, 85,213.53 and 37,895.58

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Solution

The fourth proportional to 61,785.72, 85,213.53 and 37,895.58 is: 52,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,785.72 : 85,213.53 = 37,895.58 : x
  2. Step 2: Convert to fraction form
    61,785.72/85,213.53 = 37,895.58/x
  3. Step 3: Cross multiply
    61,785.72x = 85,213.53 × 37,895.58
  4. Step 4: Simplify right side
    61,785.72x = 3,229,216,143.20
  5. Step 5: Solve for x
    x = 3,229,216,143.20/61,785.72
  6. Step 6: Final answer
    x = 52,264.77

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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.