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Finding the Fourth Proportional to 92,616.40, 139,054.20 and 57,624.40

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Solution

The fourth proportional to 92,616.40, 139,054.20 and 57,624.40 is: 86,517.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,616.40 : 139,054.20 = 57,624.40 : x
  2. Step 2: Convert to fraction form
    92,616.40/139,054.20 = 57,624.40/x
  3. Step 3: Cross multiply
    92,616.40x = 139,054.20 × 57,624.40
  4. Step 4: Simplify right side
    92,616.40x = 8,012,914,842.48
  5. Step 5: Solve for x
    x = 8,012,914,842.48/92,616.40
  6. Step 6: Final answer
    x = 86,517.23

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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.