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Finding the Fourth Proportional to 475,692.54, 712,139.13 and 317,528.70

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Solution

The fourth proportional to 475,692.54, 712,139.13 and 317,528.70 is: 475,358.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,692.54 : 712,139.13 = 317,528.70 : x
  2. Step 2: Convert to fraction form
    475,692.54/712,139.13 = 317,528.70/x
  3. Step 3: Cross multiply
    475,692.54x = 712,139.13 × 317,528.70
  4. Step 4: Simplify right side
    475,692.54x = 226,124,612,168.03
  5. Step 5: Solve for x
    x = 226,124,612,168.03/475,692.54
  6. Step 6: Final answer
    x = 475,358.75

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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.