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Finding the Fourth Proportional to 92,168.60, 138,031.43 and 52,605.77

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Solution

The fourth proportional to 92,168.60, 138,031.43 and 52,605.77 is: 78,782.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,168.60 : 138,031.43 = 52,605.77 : x
  2. Step 2: Convert to fraction form
    92,168.60/138,031.43 = 52,605.77/x
  3. Step 3: Cross multiply
    92,168.60x = 138,031.43 × 52,605.77
  4. Step 4: Simplify right side
    92,168.60x = 7,261,248,706.17
  5. Step 5: Solve for x
    x = 7,261,248,706.17/92,168.60
  6. Step 6: Final answer
    x = 78,782.24

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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.