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Finding the Fourth Proportional to 9,964.65, 13,752.19 and 7,442.38

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Solution

The fourth proportional to 9,964.65, 13,752.19 and 7,442.38 is: 10,271.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,964.65 : 13,752.19 = 7,442.38 : x
  2. Step 2: Convert to fraction form
    9,964.65/13,752.19 = 7,442.38/x
  3. Step 3: Cross multiply
    9,964.65x = 13,752.19 × 7,442.38
  4. Step 4: Simplify right side
    9,964.65x = 102,349,022.40
  5. Step 5: Solve for x
    x = 102,349,022.40/9,964.65
  6. Step 6: Final answer
    x = 10,271.21

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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.