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Finding the Fourth Proportional to 9,798.40, 14,697.60 and 5,910.40

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Solution

The fourth proportional to 9,798.40, 14,697.60 and 5,910.40 is: 8,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,798.40 : 14,697.60 = 5,910.40 : x
  2. Step 2: Convert to fraction form
    9,798.40/14,697.60 = 5,910.40/x
  3. Step 3: Cross multiply
    9,798.40x = 14,697.60 × 5,910.40
  4. Step 4: Simplify right side
    9,798.40x = 86,868,695.04
  5. Step 5: Solve for x
    x = 86,868,695.04/9,798.40
  6. Step 6: Final answer
    x = 8,865.60

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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.