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Finding the Fourth Proportional to 140,417.52, 210,654.51 and 51,671.49

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Solution

The fourth proportional to 140,417.52, 210,654.51 and 51,671.49 is: 77,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,417.52 : 210,654.51 = 51,671.49 : x
  2. Step 2: Convert to fraction form
    140,417.52/210,654.51 = 51,671.49/x
  3. Step 3: Cross multiply
    140,417.52x = 210,654.51 × 51,671.49
  4. Step 4: Simplify right side
    140,417.52x = 10,884,832,406.92
  5. Step 5: Solve for x
    x = 10,884,832,406.92/140,417.52
  6. Step 6: Final answer
    x = 77,517.62

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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.