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Finding the Fourth Proportional to 22,045.80, 33,047.10 and 19,421.40

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Solution

The fourth proportional to 22,045.80, 33,047.10 and 19,421.40 is: 29,113.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,045.80 : 33,047.10 = 19,421.40 : x
  2. Step 2: Convert to fraction form
    22,045.80/33,047.10 = 19,421.40/x
  3. Step 3: Cross multiply
    22,045.80x = 33,047.10 × 19,421.40
  4. Step 4: Simplify right side
    22,045.80x = 641,820,947.94
  5. Step 5: Solve for x
    x = 641,820,947.94/22,045.80
  6. Step 6: Final answer
    x = 29,113.07

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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.