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Finding the Fourth Proportional to 141,808.60, 212,712.90 and 133,060.60

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Solution

The fourth proportional to 141,808.60, 212,712.90 and 133,060.60 is: 199,590.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,808.60 : 212,712.90 = 133,060.60 : x
  2. Step 2: Convert to fraction form
    141,808.60/212,712.90 = 133,060.60/x
  3. Step 3: Cross multiply
    141,808.60x = 212,712.90 × 133,060.60
  4. Step 4: Simplify right side
    141,808.60x = 28,303,706,101.74
  5. Step 5: Solve for x
    x = 28,303,706,101.74/141,808.60
  6. Step 6: Final answer
    x = 199,590.90

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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.