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Finding the Fourth Proportional to 92,699.18, 138,941.67 and 42,674.39

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Solution

The fourth proportional to 92,699.18, 138,941.67 and 42,674.39 is: 63,962.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,699.18 : 138,941.67 = 42,674.39 : x
  2. Step 2: Convert to fraction form
    92,699.18/138,941.67 = 42,674.39/x
  3. Step 3: Cross multiply
    92,699.18x = 138,941.67 × 42,674.39
  4. Step 4: Simplify right side
    92,699.18x = 5,929,251,012.83
  5. Step 5: Solve for x
    x = 5,929,251,012.83/92,699.18
  6. Step 6: Final answer
    x = 63,962.28

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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.