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Finding the Fourth Proportional to 125,905.60, 188,741.76 and 63,503.68

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Solution

The fourth proportional to 125,905.60, 188,741.76 and 63,503.68 is: 95,196.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,905.60 : 188,741.76 = 63,503.68 : x
  2. Step 2: Convert to fraction form
    125,905.60/188,741.76 = 63,503.68/x
  3. Step 3: Cross multiply
    125,905.60x = 188,741.76 × 63,503.68
  4. Step 4: Simplify right side
    125,905.60x = 11,985,796,329.68
  5. Step 5: Solve for x
    x = 11,985,796,329.68/125,905.60
  6. Step 6: Final answer
    x = 95,196.69

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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.