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Finding the Fourth Proportional to 109,967.40, 164,912.70 and 57,359.40

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Solution

The fourth proportional to 109,967.40, 164,912.70 and 57,359.40 is: 86,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,967.40 : 164,912.70 = 57,359.40 : x
  2. Step 2: Convert to fraction form
    109,967.40/164,912.70 = 57,359.40/x
  3. Step 3: Cross multiply
    109,967.40x = 164,912.70 × 57,359.40
  4. Step 4: Simplify right side
    109,967.40x = 9,459,293,524.38
  5. Step 5: Solve for x
    x = 9,459,293,524.38/109,967.40
  6. Step 6: Final answer
    x = 86,019.07

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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.