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Finding the Fourth Proportional to 126,883, 190,317.30 and 38,134.72

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Solution

The fourth proportional to 126,883, 190,317.30 and 38,134.72 is: 57,199.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,883 : 190,317.30 = 38,134.72 : x
  2. Step 2: Convert to fraction form
    126,883/190,317.30 = 38,134.72/x
  3. Step 3: Cross multiply
    126,883x = 190,317.30 × 38,134.72
  4. Step 4: Simplify right side
    126,883x = 7,257,696,946.66
  5. Step 5: Solve for x
    x = 7,257,696,946.66/126,883
  6. Step 6: Final answer
    x = 57,199.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.