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Finding the Fourth Proportional to 11,775.51, 16,250.15 and 6,470.69

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Solution

The fourth proportional to 11,775.51, 16,250.15 and 6,470.69 is: 8,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.51 : 16,250.15 = 6,470.69 : x
  2. Step 2: Convert to fraction form
    11,775.51/16,250.15 = 6,470.69/x
  3. Step 3: Cross multiply
    11,775.51x = 16,250.15 × 6,470.69
  4. Step 4: Simplify right side
    11,775.51x = 105,149,618.03
  5. Step 5: Solve for x
    x = 105,149,618.03/11,775.51
  6. Step 6: Final answer
    x = 8,929.52

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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.