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Finding the Fourth Proportional to 7,482.74, 10,326.78 and 4,126.20

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Solution

The fourth proportional to 7,482.74, 10,326.78 and 4,126.20 is: 5,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,482.74 : 10,326.78 = 4,126.20 : x
  2. Step 2: Convert to fraction form
    7,482.74/10,326.78 = 4,126.20/x
  3. Step 3: Cross multiply
    7,482.74x = 10,326.78 × 4,126.20
  4. Step 4: Simplify right side
    7,482.74x = 42,610,359.64
  5. Step 5: Solve for x
    x = 42,610,359.64/7,482.74
  6. Step 6: Final answer
    x = 5,694.49

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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.