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Finding the Fourth Proportional to 97,726.80, 146,590.20 and 87,877.20

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Solution

The fourth proportional to 97,726.80, 146,590.20 and 87,877.20 is: 131,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,726.80 : 146,590.20 = 87,877.20 : x
  2. Step 2: Convert to fraction form
    97,726.80/146,590.20 = 87,877.20/x
  3. Step 3: Cross multiply
    97,726.80x = 146,590.20 × 87,877.20
  4. Step 4: Simplify right side
    97,726.80x = 12,881,936,323.44
  5. Step 5: Solve for x
    x = 12,881,936,323.44/97,726.80
  6. Step 6: Final answer
    x = 131,815.80

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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.