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Finding the Fourth Proportional to 125,673.68, 188,505.60 and 42,567.68

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Solution

The fourth proportional to 125,673.68, 188,505.60 and 42,567.68 is: 63,849.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,673.68 : 188,505.60 = 42,567.68 : x
  2. Step 2: Convert to fraction form
    125,673.68/188,505.60 = 42,567.68/x
  3. Step 3: Cross multiply
    125,673.68x = 188,505.60 × 42,567.68
  4. Step 4: Simplify right side
    125,673.68x = 8,024,246,059.01
  5. Step 5: Solve for x
    x = 8,024,246,059.01/125,673.68
  6. Step 6: Final answer
    x = 63,849.85

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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.