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Finding the Fourth Proportional to 8,502.86, 11,739.78 and 5,317.53

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Solution

The fourth proportional to 8,502.86, 11,739.78 and 5,317.53 is: 7,341.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,502.86 : 11,739.78 = 5,317.53 : x
  2. Step 2: Convert to fraction form
    8,502.86/11,739.78 = 5,317.53/x
  3. Step 3: Cross multiply
    8,502.86x = 11,739.78 × 5,317.53
  4. Step 4: Simplify right side
    8,502.86x = 62,426,632.34
  5. Step 5: Solve for x
    x = 62,426,632.34/8,502.86
  6. Step 6: Final answer
    x = 7,341.84

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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.