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Finding the Fourth Proportional to 9,570.20, 13,219.14 and 7,359.20

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Solution

The fourth proportional to 9,570.20, 13,219.14 and 7,359.20 is: 10,165.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,570.20 : 13,219.14 = 7,359.20 : x
  2. Step 2: Convert to fraction form
    9,570.20/13,219.14 = 7,359.20/x
  3. Step 3: Cross multiply
    9,570.20x = 13,219.14 × 7,359.20
  4. Step 4: Simplify right side
    9,570.20x = 97,282,295.09
  5. Step 5: Solve for x
    x = 97,282,295.09/9,570.20
  6. Step 6: Final answer
    x = 10,165.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.