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Finding the Fourth Proportional to 92,271, 138,416.22 and 42,342.60

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Solution

The fourth proportional to 92,271, 138,416.22 and 42,342.60 is: 63,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,271 : 138,416.22 = 42,342.60 : x
  2. Step 2: Convert to fraction form
    92,271/138,416.22 = 42,342.60/x
  3. Step 3: Cross multiply
    92,271x = 138,416.22 × 42,342.60
  4. Step 4: Simplify right side
    92,271x = 5,860,902,636.97
  5. Step 5: Solve for x
    x = 5,860,902,636.97/92,271
  6. Step 6: Final answer
    x = 63,518.36

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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.