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Finding the Fourth Proportional to 9,708.40, 14,562.60 and 8,556.40

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Solution

The fourth proportional to 9,708.40, 14,562.60 and 8,556.40 is: 12,834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,708.40 : 14,562.60 = 8,556.40 : x
  2. Step 2: Convert to fraction form
    9,708.40/14,562.60 = 8,556.40/x
  3. Step 3: Cross multiply
    9,708.40x = 14,562.60 × 8,556.40
  4. Step 4: Simplify right side
    9,708.40x = 124,603,430.64
  5. Step 5: Solve for x
    x = 124,603,430.64/9,708.40
  6. Step 6: Final answer
    x = 12,834.60

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1.5x scale

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.