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Finding the Fourth Proportional to 38,250.90, 57,118.79 and 31,244.90

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Solution

The fourth proportional to 38,250.90, 57,118.79 and 31,244.90 is: 46,656.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,250.90 : 57,118.79 = 31,244.90 : x
  2. Step 2: Convert to fraction form
    38,250.90/57,118.79 = 31,244.90/x
  3. Step 3: Cross multiply
    38,250.90x = 57,118.79 × 31,244.90
  4. Step 4: Simplify right side
    38,250.90x = 1,784,670,881.67
  5. Step 5: Solve for x
    x = 1,784,670,881.67/38,250.90
  6. Step 6: Final answer
    x = 46,656.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.