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Finding the Fourth Proportional to 11,528.33, 15,892.35 and 9,928.06

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Solution

The fourth proportional to 11,528.33, 15,892.35 and 9,928.06 is: 13,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,528.33 : 15,892.35 = 9,928.06 : x
  2. Step 2: Convert to fraction form
    11,528.33/15,892.35 = 9,928.06/x
  3. Step 3: Cross multiply
    11,528.33x = 15,892.35 × 9,928.06
  4. Step 4: Simplify right side
    11,528.33x = 157,780,204.34
  5. Step 5: Solve for x
    x = 157,780,204.34/11,528.33
  6. Step 6: Final answer
    x = 13,686.30

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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.