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Finding the Fourth Proportional to 96,689.76, 133,437.36 and 54,252

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Solution

The fourth proportional to 96,689.76, 133,437.36 and 54,252 is: 74,870.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,689.76 : 133,437.36 = 54,252 : x
  2. Step 2: Convert to fraction form
    96,689.76/133,437.36 = 54,252/x
  3. Step 3: Cross multiply
    96,689.76x = 133,437.36 × 54,252
  4. Step 4: Simplify right side
    96,689.76x = 7,239,243,654.72
  5. Step 5: Solve for x
    x = 7,239,243,654.72/96,689.76
  6. Step 6: Final answer
    x = 74,870.84

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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.