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Finding the Fourth Proportional to 125,869.79, 188,692.36 and 46,987.67

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Solution

The fourth proportional to 125,869.79, 188,692.36 and 46,987.67 is: 70,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,869.79 : 188,692.36 = 46,987.67 : x
  2. Step 2: Convert to fraction form
    125,869.79/188,692.36 = 46,987.67/x
  3. Step 3: Cross multiply
    125,869.79x = 188,692.36 × 46,987.67
  4. Step 4: Simplify right side
    125,869.79x = 8,866,214,343.20
  5. Step 5: Solve for x
    x = 8,866,214,343.20/125,869.79
  6. Step 6: Final answer
    x = 70,439.57

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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.