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Finding the Fourth Proportional to 69,790.53, 96,302.19 and 47,178.72

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Solution

The fourth proportional to 69,790.53, 96,302.19 and 47,178.72 is: 65,100.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,790.53 : 96,302.19 = 47,178.72 : x
  2. Step 2: Convert to fraction form
    69,790.53/96,302.19 = 47,178.72/x
  3. Step 3: Cross multiply
    69,790.53x = 96,302.19 × 47,178.72
  4. Step 4: Simplify right side
    69,790.53x = 4,543,414,057.40
  5. Step 5: Solve for x
    x = 4,543,414,057.40/69,790.53
  6. Step 6: Final answer
    x = 65,100.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.