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Finding the Fourth Proportional to 186,312.67, 279,473.59 and 67,983.98

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Solution

The fourth proportional to 186,312.67, 279,473.59 and 67,983.98 is: 101,977.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,312.67 : 279,473.59 = 67,983.98 : x
  2. Step 2: Convert to fraction form
    186,312.67/279,473.59 = 67,983.98/x
  3. Step 3: Cross multiply
    186,312.67x = 279,473.59 × 67,983.98
  4. Step 4: Simplify right side
    186,312.67x = 18,999,726,953.09
  5. Step 5: Solve for x
    x = 18,999,726,953.09/186,312.67
  6. Step 6: Final answer
    x = 101,977.64

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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.