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Finding the Fourth Proportional to 186,493.76, 279,809.76 and 86,707.52

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Solution

The fourth proportional to 186,493.76, 279,809.76 and 86,707.52 is: 130,093.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,493.76 : 279,809.76 = 86,707.52 : x
  2. Step 2: Convert to fraction form
    186,493.76/279,809.76 = 86,707.52/x
  3. Step 3: Cross multiply
    186,493.76x = 279,809.76 × 86,707.52
  4. Step 4: Simplify right side
    186,493.76x = 24,261,610,361.40
  5. Step 5: Solve for x
    x = 24,261,610,361.40/186,493.76
  6. Step 6: Final answer
    x = 130,093.42

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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.