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Finding the Fourth Proportional to 7,298.60, 10,947.90 and 4,674.20

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Solution

The fourth proportional to 7,298.60, 10,947.90 and 4,674.20 is: 7,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,298.60 : 10,947.90 = 4,674.20 : x
  2. Step 2: Convert to fraction form
    7,298.60/10,947.90 = 4,674.20/x
  3. Step 3: Cross multiply
    7,298.60x = 10,947.90 × 4,674.20
  4. Step 4: Simplify right side
    7,298.60x = 51,172,674.18
  5. Step 5: Solve for x
    x = 51,172,674.18/7,298.60
  6. Step 6: Final answer
    x = 7,011.30

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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.