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Finding the Fourth Proportional to 55,955.48, 83,930.50 and 20,892.40

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Solution

The fourth proportional to 55,955.48, 83,930.50 and 20,892.40 is: 31,337.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,955.48 : 83,930.50 = 20,892.40 : x
  2. Step 2: Convert to fraction form
    55,955.48/83,930.50 = 20,892.40/x
  3. Step 3: Cross multiply
    55,955.48x = 83,930.50 × 20,892.40
  4. Step 4: Simplify right side
    55,955.48x = 1,753,509,578.20
  5. Step 5: Solve for x
    x = 1,753,509,578.20/55,955.48
  6. Step 6: Final answer
    x = 31,337.58

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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.