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Finding the Fourth Proportional to 186,699.51, 279,957.10 and 81,472.95

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Solution

The fourth proportional to 186,699.51, 279,957.10 and 81,472.95 is: 122,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,699.51 : 279,957.10 = 81,472.95 : x
  2. Step 2: Convert to fraction form
    186,699.51/279,957.10 = 81,472.95/x
  3. Step 3: Cross multiply
    186,699.51x = 279,957.10 × 81,472.95
  4. Step 4: Simplify right side
    186,699.51x = 22,808,929,206.98
  5. Step 5: Solve for x
    x = 22,808,929,206.98/186,699.51
  6. Step 6: Final answer
    x = 122,169.20

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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.