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Finding the Fourth Proportional to 141,802.66, 212,787.03 and 78,675.59

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Solution

The fourth proportional to 141,802.66, 212,787.03 and 78,675.59 is: 118,059.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,802.66 : 212,787.03 = 78,675.59 : x
  2. Step 2: Convert to fraction form
    141,802.66/212,787.03 = 78,675.59/x
  3. Step 3: Cross multiply
    141,802.66x = 212,787.03 × 78,675.59
  4. Step 4: Simplify right side
    141,802.66x = 16,741,145,129.60
  5. Step 5: Solve for x
    x = 16,741,145,129.60/141,802.66
  6. Step 6: Final answer
    x = 118,059.46

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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.