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Finding the Fourth Proportional to 125,655.12, 188,380.32 and 69,492.96

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Solution

The fourth proportional to 125,655.12, 188,380.32 and 69,492.96 is: 104,182.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,655.12 : 188,380.32 = 69,492.96 : x
  2. Step 2: Convert to fraction form
    125,655.12/188,380.32 = 69,492.96/x
  3. Step 3: Cross multiply
    125,655.12x = 188,380.32 × 69,492.96
  4. Step 4: Simplify right side
    125,655.12x = 13,091,106,042.55
  5. Step 5: Solve for x
    x = 13,091,106,042.55/125,655.12
  6. Step 6: Final answer
    x = 104,182.83

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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.