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Finding the Fourth Proportional to 92,510.71, 138,765.79 and 36,311.49

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Solution

The fourth proportional to 92,510.71, 138,765.79 and 36,311.49 is: 54,467.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,510.71 : 138,765.79 = 36,311.49 : x
  2. Step 2: Convert to fraction form
    92,510.71/138,765.79 = 36,311.49/x
  3. Step 3: Cross multiply
    92,510.71x = 138,765.79 × 36,311.49
  4. Step 4: Simplify right side
    92,510.71x = 5,038,792,641.32
  5. Step 5: Solve for x
    x = 5,038,792,641.32/92,510.71
  6. Step 6: Final answer
    x = 54,467.13

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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.