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Finding the Fourth Proportional to 35,716.86, 53,569.20 and 9,421.86

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Solution

The fourth proportional to 35,716.86, 53,569.20 and 9,421.86 is: 14,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,716.86 : 53,569.20 = 9,421.86 : x
  2. Step 2: Convert to fraction form
    35,716.86/53,569.20 = 9,421.86/x
  3. Step 3: Cross multiply
    35,716.86x = 53,569.20 × 9,421.86
  4. Step 4: Simplify right side
    35,716.86x = 504,721,502.71
  5. Step 5: Solve for x
    x = 504,721,502.71/35,716.86
  6. Step 6: Final answer
    x = 14,131.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.