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Finding the Fourth Proportional to 92,099.70, 138,068.55 and 62,421.30

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Solution

The fourth proportional to 92,099.70, 138,068.55 and 62,421.30 is: 93,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,099.70 : 138,068.55 = 62,421.30 : x
  2. Step 2: Convert to fraction form
    92,099.70/138,068.55 = 62,421.30/x
  3. Step 3: Cross multiply
    92,099.70x = 138,068.55 × 62,421.30
  4. Step 4: Simplify right side
    92,099.70x = 8,618,418,380.12
  5. Step 5: Solve for x
    x = 8,618,418,380.12/92,099.70
  6. Step 6: Final answer
    x = 93,577.05

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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.