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Finding the Fourth Proportional to 54,915.47, 82,373.20 and 13,362.47

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Solution

The fourth proportional to 54,915.47, 82,373.20 and 13,362.47 is: 20,043.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,915.47 : 82,373.20 = 13,362.47 : x
  2. Step 2: Convert to fraction form
    54,915.47/82,373.20 = 13,362.47/x
  3. Step 3: Cross multiply
    54,915.47x = 82,373.20 × 13,362.47
  4. Step 4: Simplify right side
    54,915.47x = 1,100,709,352.60
  5. Step 5: Solve for x
    x = 1,100,709,352.60/54,915.47
  6. Step 6: Final answer
    x = 20,043.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.