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Finding the Fourth Proportional to 92,700, 127,943.28 and 52,956

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Solution

The fourth proportional to 92,700, 127,943.28 and 52,956 is: 73,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,700 : 127,943.28 = 52,956 : x
  2. Step 2: Convert to fraction form
    92,700/127,943.28 = 52,956/x
  3. Step 3: Cross multiply
    92,700x = 127,943.28 × 52,956
  4. Step 4: Simplify right side
    92,700x = 6,775,364,335.68
  5. Step 5: Solve for x
    x = 6,775,364,335.68/92,700
  6. Step 6: Final answer
    x = 73,089.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.