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Finding the Fourth Proportional to 186,149.79, 279,030.29 and 91,248.57

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Solution

The fourth proportional to 186,149.79, 279,030.29 and 91,248.57 is: 136,777.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,149.79 : 279,030.29 = 91,248.57 : x
  2. Step 2: Convert to fraction form
    186,149.79/279,030.29 = 91,248.57/x
  3. Step 3: Cross multiply
    186,149.79x = 279,030.29 × 91,248.57
  4. Step 4: Simplify right side
    186,149.79x = 25,461,114,492.94
  5. Step 5: Solve for x
    x = 25,461,114,492.94/186,149.79
  6. Step 6: Final answer
    x = 136,777.56

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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.