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Finding the Fourth Proportional to 92,860.70, 139,274.58 and 42,247.97

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Solution

The fourth proportional to 92,860.70, 139,274.58 and 42,247.97 is: 63,364.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,860.70 : 139,274.58 = 42,247.97 : x
  2. Step 2: Convert to fraction form
    92,860.70/139,274.58 = 42,247.97/x
  3. Step 3: Cross multiply
    92,860.70x = 139,274.58 × 42,247.97
  4. Step 4: Simplify right side
    92,860.70x = 5,884,067,581.23
  5. Step 5: Solve for x
    x = 5,884,067,581.23/92,860.70
  6. Step 6: Final answer
    x = 63,364.46

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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.