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Finding the Fourth Proportional to 71,378.08, 107,045.12 and 49,333.12

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Solution

The fourth proportional to 71,378.08, 107,045.12 and 49,333.12 is: 73,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,378.08 : 107,045.12 = 49,333.12 : x
  2. Step 2: Convert to fraction form
    71,378.08/107,045.12 = 49,333.12/x
  3. Step 3: Cross multiply
    71,378.08x = 107,045.12 × 49,333.12
  4. Step 4: Simplify right side
    71,378.08x = 5,280,869,750.37
  5. Step 5: Solve for x
    x = 5,280,869,750.37/71,378.08
  6. Step 6: Final answer
    x = 73,984.47

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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.