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Finding the Fourth Proportional to 34,489.76, 47,486.75 and 31,336.52

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Solution

The fourth proportional to 34,489.76, 47,486.75 and 31,336.52 is: 43,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,489.76 : 47,486.75 = 31,336.52 : x
  2. Step 2: Convert to fraction form
    34,489.76/47,486.75 = 31,336.52/x
  3. Step 3: Cross multiply
    34,489.76x = 47,486.75 × 31,336.52
  4. Step 4: Simplify right side
    34,489.76x = 1,488,069,096.99
  5. Step 5: Solve for x
    x = 1,488,069,096.99/34,489.76
  6. Step 6: Final answer
    x = 43,145.25

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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.