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Finding the Fourth Proportional to 77,620.70, 116,596.89 and 55,575.74

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Solution

The fourth proportional to 77,620.70, 116,596.89 and 55,575.74 is: 83,482.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,620.70 : 116,596.89 = 55,575.74 : x
  2. Step 2: Convert to fraction form
    77,620.70/116,596.89 = 55,575.74/x
  3. Step 3: Cross multiply
    77,620.70x = 116,596.89 × 55,575.74
  4. Step 4: Simplify right side
    77,620.70x = 6,479,957,860.46
  5. Step 5: Solve for x
    x = 6,479,957,860.46/77,620.70
  6. Step 6: Final answer
    x = 83,482.35

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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.