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Finding the Fourth Proportional to 70,508.38, 105,731.44 and 33,038.19

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Solution

The fourth proportional to 70,508.38, 105,731.44 and 33,038.19 is: 49,542.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,508.38 : 105,731.44 = 33,038.19 : x
  2. Step 2: Convert to fraction form
    70,508.38/105,731.44 = 33,038.19/x
  3. Step 3: Cross multiply
    70,508.38x = 105,731.44 × 33,038.19
  4. Step 4: Simplify right side
    70,508.38x = 3,493,175,403.69
  5. Step 5: Solve for x
    x = 3,493,175,403.69/70,508.38
  6. Step 6: Final answer
    x = 49,542.70

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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.