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Finding the Fourth Proportional to 107,593.40, 161,390.10 and 54,985.40

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Solution

The fourth proportional to 107,593.40, 161,390.10 and 54,985.40 is: 82,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,593.40 : 161,390.10 = 54,985.40 : x
  2. Step 2: Convert to fraction form
    107,593.40/161,390.10 = 54,985.40/x
  3. Step 3: Cross multiply
    107,593.40x = 161,390.10 × 54,985.40
  4. Step 4: Simplify right side
    107,593.40x = 8,874,099,204.54
  5. Step 5: Solve for x
    x = 8,874,099,204.54/107,593.40
  6. Step 6: Final answer
    x = 82,478.10

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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.