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Finding the Fourth Proportional to 628,085.78, 866,769.35 and 341,607.81

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Solution

The fourth proportional to 628,085.78, 866,769.35 and 341,607.81 is: 471,424.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,085.78 : 866,769.35 = 341,607.81 : x
  2. Step 2: Convert to fraction form
    628,085.78/866,769.35 = 341,607.81/x
  3. Step 3: Cross multiply
    628,085.78x = 866,769.35 × 341,607.81
  4. Step 4: Simplify right side
    628,085.78x = 296,095,177,720.58
  5. Step 5: Solve for x
    x = 296,095,177,720.58/628,085.78
  6. Step 6: Final answer
    x = 471,424.75

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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.