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Finding the Fourth Proportional to 3,572.08, 5,357.50 and 974.40

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Solution

The fourth proportional to 3,572.08, 5,357.50 and 974.40 is: 1,461.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.08 : 5,357.50 = 974.40 : x
  2. Step 2: Convert to fraction form
    3,572.08/5,357.50 = 974.40/x
  3. Step 3: Cross multiply
    3,572.08x = 5,357.50 × 974.40
  4. Step 4: Simplify right side
    3,572.08x = 5,220,348
  5. Step 5: Solve for x
    x = 5,220,348/3,572.08
  6. Step 6: Final answer
    x = 1,461.43

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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.