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Finding the Fourth Proportional to 15,070.84, 20,795.78 and 8,610.30

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Solution

The fourth proportional to 15,070.84, 20,795.78 and 8,610.30 is: 11,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,070.84 : 20,795.78 = 8,610.30 : x
  2. Step 2: Convert to fraction form
    15,070.84/20,795.78 = 8,610.30/x
  3. Step 3: Cross multiply
    15,070.84x = 20,795.78 × 8,610.30
  4. Step 4: Simplify right side
    15,070.84x = 179,057,926.06
  5. Step 5: Solve for x
    x = 179,057,926.06/15,070.84
  6. Step 6: Final answer
    x = 11,881.09

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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.