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Finding the Fourth Proportional to 401,783.41, 554,424.46 and 238,411.76

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Solution

The fourth proportional to 401,783.41, 554,424.46 and 238,411.76 is: 328,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,783.41 : 554,424.46 = 238,411.76 : x
  2. Step 2: Convert to fraction form
    401,783.41/554,424.46 = 238,411.76/x
  3. Step 3: Cross multiply
    401,783.41x = 554,424.46 × 238,411.76
  4. Step 4: Simplify right side
    401,783.41x = 132,181,312,085.68
  5. Step 5: Solve for x
    x = 132,181,312,085.68/401,783.41
  6. Step 6: Final answer
    x = 328,986.49

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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.