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Finding the Fourth Proportional to 52,564.70, 78,847.05 and 40,814.30

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Solution

The fourth proportional to 52,564.70, 78,847.05 and 40,814.30 is: 61,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,564.70 : 78,847.05 = 40,814.30 : x
  2. Step 2: Convert to fraction form
    52,564.70/78,847.05 = 40,814.30/x
  3. Step 3: Cross multiply
    52,564.70x = 78,847.05 × 40,814.30
  4. Step 4: Simplify right side
    52,564.70x = 3,218,087,152.82
  5. Step 5: Solve for x
    x = 3,218,087,152.82/52,564.70
  6. Step 6: Final answer
    x = 61,221.45

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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.