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Finding the Fourth Proportional to 9,425.43, 13,008.14 and 5,392.63

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Solution

The fourth proportional to 9,425.43, 13,008.14 and 5,392.63 is: 7,442.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,425.43 : 13,008.14 = 5,392.63 : x
  2. Step 2: Convert to fraction form
    9,425.43/13,008.14 = 5,392.63/x
  3. Step 3: Cross multiply
    9,425.43x = 13,008.14 × 5,392.63
  4. Step 4: Simplify right side
    9,425.43x = 70,148,059.05
  5. Step 5: Solve for x
    x = 70,148,059.05/9,425.43
  6. Step 6: Final answer
    x = 7,442.43

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Half scale
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Double scale
Find fourth proportional to 9,426.43, 13,009.52 and 5,393.63
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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.