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Finding the Fourth Proportional to 132,920.40, 199,415.80 and 58,008.40

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Solution

The fourth proportional to 132,920.40, 199,415.80 and 58,008.40 is: 87,027.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,920.40 : 199,415.80 = 58,008.40 : x
  2. Step 2: Convert to fraction form
    132,920.40/199,415.80 = 58,008.40/x
  3. Step 3: Cross multiply
    132,920.40x = 199,415.80 × 58,008.40
  4. Step 4: Simplify right side
    132,920.40x = 11,567,791,492.72
  5. Step 5: Solve for x
    x = 11,567,791,492.72/132,920.40
  6. Step 6: Final answer
    x = 87,027.96

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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.