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Finding the Fourth Proportional to 293,389.71, 439,969.77 and 103,776.81

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Solution

The fourth proportional to 293,389.71, 439,969.77 and 103,776.81 is: 155,624.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,389.71 : 439,969.77 = 103,776.81 : x
  2. Step 2: Convert to fraction form
    293,389.71/439,969.77 = 103,776.81/x
  3. Step 3: Cross multiply
    293,389.71x = 439,969.77 × 103,776.81
  4. Step 4: Simplify right side
    293,389.71x = 45,658,659,227.03
  5. Step 5: Solve for x
    x = 45,658,659,227.03/293,389.71
  6. Step 6: Final answer
    x = 155,624.61

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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.