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Finding the Fourth Proportional to 628,065.80, 866,734.88 and 341,587.96

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Solution

The fourth proportional to 628,065.80, 866,734.88 and 341,587.96 is: 471,393.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,065.80 : 866,734.88 = 341,587.96 : x
  2. Step 2: Convert to fraction form
    628,065.80/866,734.88 = 341,587.96/x
  3. Step 3: Cross multiply
    628,065.80x = 866,734.88 × 341,587.96
  4. Step 4: Simplify right side
    628,065.80x = 296,066,199,520.05
  5. Step 5: Solve for x
    x = 296,066,199,520.05/628,065.80
  6. Step 6: Final answer
    x = 471,393.60

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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.