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Finding the Fourth Proportional to 56,660.40, 84,998.70 and 19,222.20

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Solution

The fourth proportional to 56,660.40, 84,998.70 and 19,222.20 is: 28,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,660.40 : 84,998.70 = 19,222.20 : x
  2. Step 2: Convert to fraction form
    56,660.40/84,998.70 = 19,222.20/x
  3. Step 3: Cross multiply
    56,660.40x = 84,998.70 × 19,222.20
  4. Step 4: Simplify right side
    56,660.40x = 1,633,862,011.14
  5. Step 5: Solve for x
    x = 1,633,862,011.14/56,660.40
  6. Step 6: Final answer
    x = 28,836.05

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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.