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Finding the Fourth Proportional to 92,776.50, 138,980.43 and 45,886.26

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Solution

The fourth proportional to 92,776.50, 138,980.43 and 45,886.26 is: 68,738.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,776.50 : 138,980.43 = 45,886.26 : x
  2. Step 2: Convert to fraction form
    92,776.50/138,980.43 = 45,886.26/x
  3. Step 3: Cross multiply
    92,776.50x = 138,980.43 × 45,886.26
  4. Step 4: Simplify right side
    92,776.50x = 6,377,292,145.89
  5. Step 5: Solve for x
    x = 6,377,292,145.89/92,776.50
  6. Step 6: Final answer
    x = 68,738.23

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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.