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Finding the Fourth Proportional to 92,370.92, 138,355.88 and 56,724.06

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Solution

The fourth proportional to 92,370.92, 138,355.88 and 56,724.06 is: 84,962.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,370.92 : 138,355.88 = 56,724.06 : x
  2. Step 2: Convert to fraction form
    92,370.92/138,355.88 = 56,724.06/x
  3. Step 3: Cross multiply
    92,370.92x = 138,355.88 × 56,724.06
  4. Step 4: Simplify right side
    92,370.92x = 7,848,107,238.47
  5. Step 5: Solve for x
    x = 7,848,107,238.47/92,370.92
  6. Step 6: Final answer
    x = 84,962.96

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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.