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Finding the Fourth Proportional to 186,869.70, 279,648.45 and 127,820.70

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Solution

The fourth proportional to 186,869.70, 279,648.45 and 127,820.70 is: 191,282.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,869.70 : 279,648.45 = 127,820.70 : x
  2. Step 2: Convert to fraction form
    186,869.70/279,648.45 = 127,820.70/x
  3. Step 3: Cross multiply
    186,869.70x = 279,648.45 × 127,820.70
  4. Step 4: Simplify right side
    186,869.70x = 35,744,860,632.92
  5. Step 5: Solve for x
    x = 35,744,860,632.92/186,869.70
  6. Step 6: Final answer
    x = 191,282.27

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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.