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Finding the Fourth Proportional to 141,803.80, 212,691.30 and 48,308.20

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Solution

The fourth proportional to 141,803.80, 212,691.30 and 48,308.20 is: 72,457.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.80 : 212,691.30 = 48,308.20 : x
  2. Step 2: Convert to fraction form
    141,803.80/212,691.30 = 48,308.20/x
  3. Step 3: Cross multiply
    141,803.80x = 212,691.30 × 48,308.20
  4. Step 4: Simplify right side
    141,803.80x = 10,274,733,858.66
  5. Step 5: Solve for x
    x = 10,274,733,858.66/141,803.80
  6. Step 6: Final answer
    x = 72,457.39

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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.