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Finding the Fourth Proportional to 71,316.40, 106,974.60 and 34,452.40

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Solution

The fourth proportional to 71,316.40, 106,974.60 and 34,452.40 is: 51,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,316.40 : 106,974.60 = 34,452.40 : x
  2. Step 2: Convert to fraction form
    71,316.40/106,974.60 = 34,452.40/x
  3. Step 3: Cross multiply
    71,316.40x = 106,974.60 × 34,452.40
  4. Step 4: Simplify right side
    71,316.40x = 3,685,531,709.04
  5. Step 5: Solve for x
    x = 3,685,531,709.04/71,316.40
  6. Step 6: Final answer
    x = 51,678.60

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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.