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Finding the Fourth Proportional to 7,098.40, 10,628.40 and 5,562.40

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Solution

The fourth proportional to 7,098.40, 10,628.40 and 5,562.40 is: 8,328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,098.40 : 10,628.40 = 5,562.40 : x
  2. Step 2: Convert to fraction form
    7,098.40/10,628.40 = 5,562.40/x
  3. Step 3: Cross multiply
    7,098.40x = 10,628.40 × 5,562.40
  4. Step 4: Simplify right side
    7,098.40x = 59,119,412.16
  5. Step 5: Solve for x
    x = 59,119,412.16/7,098.40
  6. Step 6: Final answer
    x = 8,328.55

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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.