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Finding the Fourth Proportional to 11,572.75, 15,970.40 and 6,604.75

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Solution

The fourth proportional to 11,572.75, 15,970.40 and 6,604.75 is: 9,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,572.75 : 15,970.40 = 6,604.75 : x
  2. Step 2: Convert to fraction form
    11,572.75/15,970.40 = 6,604.75/x
  3. Step 3: Cross multiply
    11,572.75x = 15,970.40 × 6,604.75
  4. Step 4: Simplify right side
    11,572.75x = 105,480,499.40
  5. Step 5: Solve for x
    x = 105,480,499.40/11,572.75
  6. Step 6: Final answer
    x = 9,114.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.