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Finding the Fourth Proportional to 76,614.31, 114,921.07 and 19,688.17

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Solution

The fourth proportional to 76,614.31, 114,921.07 and 19,688.17 is: 29,532.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,614.31 : 114,921.07 = 19,688.17 : x
  2. Step 2: Convert to fraction form
    76,614.31/114,921.07 = 19,688.17/x
  3. Step 3: Cross multiply
    76,614.31x = 114,921.07 × 19,688.17
  4. Step 4: Simplify right side
    76,614.31x = 2,262,585,562.74
  5. Step 5: Solve for x
    x = 2,262,585,562.74/76,614.31
  6. Step 6: Final answer
    x = 29,532.15

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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.