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Finding the Fourth Proportional to 92,671.07, 138,899.07 and 42,646.14

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Solution

The fourth proportional to 92,671.07, 138,899.07 and 42,646.14 is: 63,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,671.07 : 138,899.07 = 42,646.14 : x
  2. Step 2: Convert to fraction form
    92,671.07/138,899.07 = 42,646.14/x
  3. Step 3: Cross multiply
    92,671.07x = 138,899.07 × 42,646.14
  4. Step 4: Simplify right side
    92,671.07x = 5,923,509,185.09
  5. Step 5: Solve for x
    x = 5,923,509,185.09/92,671.07
  6. Step 6: Final answer
    x = 63,919.73

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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.