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Finding the Fourth Proportional to 141,963.60, 212,989.74 and 42,124.26

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Solution

The fourth proportional to 141,963.60, 212,989.74 and 42,124.26 is: 63,199.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,963.60 : 212,989.74 = 42,124.26 : x
  2. Step 2: Convert to fraction form
    141,963.60/212,989.74 = 42,124.26/x
  3. Step 3: Cross multiply
    141,963.60x = 212,989.74 × 42,124.26
  4. Step 4: Simplify right side
    141,963.60x = 8,972,035,185.09
  5. Step 5: Solve for x
    x = 8,972,035,185.09/141,963.60
  6. Step 6: Final answer
    x = 63,199.55

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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.