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Finding the Fourth Proportional to 71,638.84, 107,421.12 and 37,923.13

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Solution

The fourth proportional to 71,638.84, 107,421.12 and 37,923.13 is: 56,865.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,638.84 : 107,421.12 = 37,923.13 : x
  2. Step 2: Convert to fraction form
    71,638.84/107,421.12 = 37,923.13/x
  3. Step 3: Cross multiply
    71,638.84x = 107,421.12 × 37,923.13
  4. Step 4: Simplify right side
    71,638.84x = 4,073,745,303.89
  5. Step 5: Solve for x
    x = 4,073,745,303.89/71,638.84
  6. Step 6: Final answer
    x = 56,865.04

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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.