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Finding the Fourth Proportional to 186,865, 280,342.15 and 60,505.38

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Solution

The fourth proportional to 186,865, 280,342.15 and 60,505.38 is: 90,772.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,865 : 280,342.15 = 60,505.38 : x
  2. Step 2: Convert to fraction form
    186,865/280,342.15 = 60,505.38/x
  3. Step 3: Cross multiply
    186,865x = 280,342.15 × 60,505.38
  4. Step 4: Simplify right side
    186,865x = 16,962,208,315.77
  5. Step 5: Solve for x
    x = 16,962,208,315.77/186,865
  6. Step 6: Final answer
    x = 90,772.53

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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.