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Finding the Fourth Proportional to 77,894.35, 116,758.08 and 55,640.23

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Solution

The fourth proportional to 77,894.35, 116,758.08 and 55,640.23 is: 83,400.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,894.35 : 116,758.08 = 55,640.23 : x
  2. Step 2: Convert to fraction form
    77,894.35/116,758.08 = 55,640.23/x
  3. Step 3: Cross multiply
    77,894.35x = 116,758.08 × 55,640.23
  4. Step 4: Simplify right side
    77,894.35x = 6,496,446,425.56
  5. Step 5: Solve for x
    x = 6,496,446,425.56/77,894.35
  6. Step 6: Final answer
    x = 83,400.74

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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.