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Finding the Fourth Proportional to 345,692.40, 518,528.72 and 188,913.68

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Solution

The fourth proportional to 345,692.40, 518,528.72 and 188,913.68 is: 283,365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,692.40 : 518,528.72 = 188,913.68 : x
  2. Step 2: Convert to fraction form
    345,692.40/518,528.72 = 188,913.68/x
  3. Step 3: Cross multiply
    345,692.40x = 518,528.72 × 188,913.68
  4. Step 4: Simplify right side
    345,692.40x = 97,957,168,680.89
  5. Step 5: Solve for x
    x = 97,957,168,680.89/345,692.40
  6. Step 6: Final answer
    x = 283,365.12

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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.