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Finding the Fourth Proportional to 141,897.76, 195,820.44 and 77,366.47

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Solution

The fourth proportional to 141,897.76, 195,820.44 and 77,366.47 is: 106,766.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,897.76 : 195,820.44 = 77,366.47 : x
  2. Step 2: Convert to fraction form
    141,897.76/195,820.44 = 77,366.47/x
  3. Step 3: Cross multiply
    141,897.76x = 195,820.44 × 77,366.47
  4. Step 4: Simplify right side
    141,897.76x = 15,149,936,962.15
  5. Step 5: Solve for x
    x = 15,149,936,962.15/141,897.76
  6. Step 6: Final answer
    x = 106,766.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.