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Finding the Fourth Proportional to 92,858.46, 139,479.65 and 75,108.93

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Solution

The fourth proportional to 92,858.46, 139,479.65 and 75,108.93 is: 112,818.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,858.46 : 139,479.65 = 75,108.93 : x
  2. Step 2: Convert to fraction form
    92,858.46/139,479.65 = 75,108.93/x
  3. Step 3: Cross multiply
    92,858.46x = 139,479.65 × 75,108.93
  4. Step 4: Simplify right side
    92,858.46x = 10,476,167,268.27
  5. Step 5: Solve for x
    x = 10,476,167,268.27/92,858.46
  6. Step 6: Final answer
    x = 112,818.66

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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.