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Finding the Fourth Proportional to 37,309, 51,486.66 and 20,543.08

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Solution

The fourth proportional to 37,309, 51,486.66 and 20,543.08 is: 28,349.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,309 : 51,486.66 = 20,543.08 : x
  2. Step 2: Convert to fraction form
    37,309/51,486.66 = 20,543.08/x
  3. Step 3: Cross multiply
    37,309x = 51,486.66 × 20,543.08
  4. Step 4: Simplify right side
    37,309x = 1,057,694,575.31
  5. Step 5: Solve for x
    x = 1,057,694,575.31/37,309
  6. Step 6: Final answer
    x = 28,349.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.