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Finding the Fourth Proportional to 186,777.19, 280,068.51 and 66,787.89

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Solution

The fourth proportional to 186,777.19, 280,068.51 and 66,787.89 is: 100,147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,777.19 : 280,068.51 = 66,787.89 : x
  2. Step 2: Convert to fraction form
    186,777.19/280,068.51 = 66,787.89/x
  3. Step 3: Cross multiply
    186,777.19x = 280,068.51 × 66,787.89
  4. Step 4: Simplify right side
    186,777.19x = 18,705,184,838.34
  5. Step 5: Solve for x
    x = 18,705,184,838.34/186,777.19
  6. Step 6: Final answer
    x = 100,147.05

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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.