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Finding the Fourth Proportional to 53,215.40, 79,794.30 and 22,015.40

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Solution

The fourth proportional to 53,215.40, 79,794.30 and 22,015.40 is: 33,011.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,215.40 : 79,794.30 = 22,015.40 : x
  2. Step 2: Convert to fraction form
    53,215.40/79,794.30 = 22,015.40/x
  3. Step 3: Cross multiply
    53,215.40x = 79,794.30 × 22,015.40
  4. Step 4: Simplify right side
    53,215.40x = 1,756,703,432.22
  5. Step 5: Solve for x
    x = 1,756,703,432.22/53,215.40
  6. Step 6: Final answer
    x = 33,011.19

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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.