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Finding the Fourth Proportional to 69,207.80, 103,665.90 and 56,085.80

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Solution

The fourth proportional to 69,207.80, 103,665.90 and 56,085.80 is: 84,010.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,207.80 : 103,665.90 = 56,085.80 : x
  2. Step 2: Convert to fraction form
    69,207.80/103,665.90 = 56,085.80/x
  3. Step 3: Cross multiply
    69,207.80x = 103,665.90 × 56,085.80
  4. Step 4: Simplify right side
    69,207.80x = 5,814,184,934.22
  5. Step 5: Solve for x
    x = 5,814,184,934.22/69,207.80
  6. Step 6: Final answer
    x = 84,010.54

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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.