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Finding the Fourth Proportional to 92,359.44, 138,510 and 39,754.80

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Solution

The fourth proportional to 92,359.44, 138,510 and 39,754.80 is: 59,619.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,359.44 : 138,510 = 39,754.80 : x
  2. Step 2: Convert to fraction form
    92,359.44/138,510 = 39,754.80/x
  3. Step 3: Cross multiply
    92,359.44x = 138,510 × 39,754.80
  4. Step 4: Simplify right side
    92,359.44x = 5,506,437,348
  5. Step 5: Solve for x
    x = 5,506,437,348/92,359.44
  6. Step 6: Final answer
    x = 59,619.65

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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.