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Finding the Fourth Proportional to 70,715.72, 106,045.80 and 26,318.18

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Solution

The fourth proportional to 70,715.72, 106,045.80 and 26,318.18 is: 39,466.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,715.72 : 106,045.80 = 26,318.18 : x
  2. Step 2: Convert to fraction form
    70,715.72/106,045.80 = 26,318.18/x
  3. Step 3: Cross multiply
    70,715.72x = 106,045.80 × 26,318.18
  4. Step 4: Simplify right side
    70,715.72x = 2,790,932,452.64
  5. Step 5: Solve for x
    x = 2,790,932,452.64/70,715.72
  6. Step 6: Final answer
    x = 39,466.93

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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.