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Finding the Fourth Proportional to 15,535.61, 23,308.01 and 7,220.61

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Solution

The fourth proportional to 15,535.61, 23,308.01 and 7,220.61 is: 10,833.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.61 : 23,308.01 = 7,220.61 : x
  2. Step 2: Convert to fraction form
    15,535.61/23,308.01 = 7,220.61/x
  3. Step 3: Cross multiply
    15,535.61x = 23,308.01 × 7,220.61
  4. Step 4: Simplify right side
    15,535.61x = 168,298,050.09
  5. Step 5: Solve for x
    x = 168,298,050.09/15,535.61
  6. Step 6: Final answer
    x = 10,833.05

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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.