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Finding the Fourth Proportional to 55,653.40, 83,488.20 and 18,204.40

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Solution

The fourth proportional to 55,653.40, 83,488.20 and 18,204.40 is: 27,309.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,653.40 : 83,488.20 = 18,204.40 : x
  2. Step 2: Convert to fraction form
    55,653.40/83,488.20 = 18,204.40/x
  3. Step 3: Cross multiply
    55,653.40x = 83,488.20 × 18,204.40
  4. Step 4: Simplify right side
    55,653.40x = 1,519,852,588.08
  5. Step 5: Solve for x
    x = 1,519,852,588.08/55,653.40
  6. Step 6: Final answer
    x = 27,309.25

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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.