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Finding the Fourth Proportional to 74,607.84, 102,498.28 and 66,754.08

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Solution

The fourth proportional to 74,607.84, 102,498.28 and 66,754.08 is: 91,708.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,607.84 : 102,498.28 = 66,754.08 : x
  2. Step 2: Convert to fraction form
    74,607.84/102,498.28 = 66,754.08/x
  3. Step 3: Cross multiply
    74,607.84x = 102,498.28 × 66,754.08
  4. Step 4: Simplify right side
    74,607.84x = 6,842,178,382.98
  5. Step 5: Solve for x
    x = 6,842,178,382.98/74,607.84
  6. Step 6: Final answer
    x = 91,708.57

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.