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Finding the Fourth Proportional to 61,216.70, 91,715.70 and 52,468.70

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Solution

The fourth proportional to 61,216.70, 91,715.70 and 52,468.70 is: 78,609.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.70 : 91,715.70 = 52,468.70 : x
  2. Step 2: Convert to fraction form
    61,216.70/91,715.70 = 52,468.70/x
  3. Step 3: Cross multiply
    61,216.70x = 91,715.70 × 52,468.70
  4. Step 4: Simplify right side
    61,216.70x = 4,812,203,548.59
  5. Step 5: Solve for x
    x = 4,812,203,548.59/61,216.70
  6. Step 6: Final answer
    x = 78,609.33

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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.