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Finding the Fourth Proportional to 134,294.40, 201,596.80 and 72,086.40

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Solution

The fourth proportional to 134,294.40, 201,596.80 and 72,086.40 is: 108,212.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,294.40 : 201,596.80 = 72,086.40 : x
  2. Step 2: Convert to fraction form
    134,294.40/201,596.80 = 72,086.40/x
  3. Step 3: Cross multiply
    134,294.40x = 201,596.80 × 72,086.40
  4. Step 4: Simplify right side
    134,294.40x = 14,532,387,563.52
  5. Step 5: Solve for x
    x = 14,532,387,563.52/134,294.40
  6. Step 6: Final answer
    x = 108,212.91

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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.