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Finding the Fourth Proportional to 9,365.48, 12,924 and 5,383.88

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Solution

The fourth proportional to 9,365.48, 12,924 and 5,383.88 is: 7,429.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.48 : 12,924 = 5,383.88 : x
  2. Step 2: Convert to fraction form
    9,365.48/12,924 = 5,383.88/x
  3. Step 3: Cross multiply
    9,365.48x = 12,924 × 5,383.88
  4. Step 4: Simplify right side
    9,365.48x = 69,581,265.12
  5. Step 5: Solve for x
    x = 69,581,265.12/9,365.48
  6. Step 6: Final answer
    x = 7,429.55

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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.