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Finding the Fourth Proportional to 9,358.60, 12,902.28 and 7,759.24

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Solution

The fourth proportional to 9,358.60, 12,902.28 and 7,759.24 is: 10,697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.60 : 12,902.28 = 7,759.24 : x
  2. Step 2: Convert to fraction form
    9,358.60/12,902.28 = 7,759.24/x
  3. Step 3: Cross multiply
    9,358.60x = 12,902.28 × 7,759.24
  4. Step 4: Simplify right side
    9,358.60x = 100,111,887.07
  5. Step 5: Solve for x
    x = 100,111,887.07/9,358.60
  6. Step 6: Final answer
    x = 10,697.31

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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.