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Finding the Fourth Proportional to 7,614.10, 11,421.15 and 7,030.90

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Solution

The fourth proportional to 7,614.10, 11,421.15 and 7,030.90 is: 10,546.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,614.10 : 11,421.15 = 7,030.90 : x
  2. Step 2: Convert to fraction form
    7,614.10/11,421.15 = 7,030.90/x
  3. Step 3: Cross multiply
    7,614.10x = 11,421.15 × 7,030.90
  4. Step 4: Simplify right side
    7,614.10x = 80,300,963.54
  5. Step 5: Solve for x
    x = 80,300,963.54/7,614.10
  6. Step 6: Final answer
    x = 10,546.35

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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.