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Finding the Fourth Proportional to 628,221.04, 866,959.08 and 341,756.56

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Solution

The fourth proportional to 628,221.04, 866,959.08 and 341,756.56 is: 471,631.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,221.04 : 866,959.08 = 341,756.56 : x
  2. Step 2: Convert to fraction form
    628,221.04/866,959.08 = 341,756.56/x
  3. Step 3: Cross multiply
    628,221.04x = 866,959.08 × 341,756.56
  4. Step 4: Simplify right side
    628,221.04x = 296,288,952,841.57
  5. Step 5: Solve for x
    x = 296,288,952,841.57/628,221.04
  6. Step 6: Final answer
    x = 471,631.69

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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.