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Finding the Fourth Proportional to 76,611.12, 114,916.28 and 19,684.98

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Solution

The fourth proportional to 76,611.12, 114,916.28 and 19,684.98 is: 29,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,611.12 : 114,916.28 = 19,684.98 : x
  2. Step 2: Convert to fraction form
    76,611.12/114,916.28 = 19,684.98/x
  3. Step 3: Cross multiply
    76,611.12x = 114,916.28 × 19,684.98
  4. Step 4: Simplify right side
    76,611.12x = 2,262,124,673.47
  5. Step 5: Solve for x
    x = 2,262,124,673.47/76,611.12
  6. Step 6: Final answer
    x = 29,527.37

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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.