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Finding the Fourth Proportional to 626,633.72, 864,770.21 and 340,153.80

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Solution

The fourth proportional to 626,633.72, 864,770.21 and 340,153.80 is: 469,420.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,633.72 : 864,770.21 = 340,153.80 : x
  2. Step 2: Convert to fraction form
    626,633.72/864,770.21 = 340,153.80/x
  3. Step 3: Cross multiply
    626,633.72x = 864,770.21 × 340,153.80
  4. Step 4: Simplify right side
    626,633.72x = 294,154,871,357.53
  5. Step 5: Solve for x
    x = 294,154,871,357.53/626,633.72
  6. Step 6: Final answer
    x = 469,420.75

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1.5x scale

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.