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Finding the Fourth Proportional to 11,798.86, 16,282.73 and 6,421.65

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Solution

The fourth proportional to 11,798.86, 16,282.73 and 6,421.65 is: 8,862.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.86 : 16,282.73 = 6,421.65 : x
  2. Step 2: Convert to fraction form
    11,798.86/16,282.73 = 6,421.65/x
  3. Step 3: Cross multiply
    11,798.86x = 16,282.73 × 6,421.65
  4. Step 4: Simplify right side
    11,798.86x = 104,562,009.16
  5. Step 5: Solve for x
    x = 104,562,009.16/11,798.86
  6. Step 6: Final answer
    x = 8,862.04

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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.