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Finding the Fourth Proportional to 623,840.12, 860,884.98 and 369,195.56

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Solution

The fourth proportional to 623,840.12, 860,884.98 and 369,195.56 is: 509,481.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,840.12 : 860,884.98 = 369,195.56 : x
  2. Step 2: Convert to fraction form
    623,840.12/860,884.98 = 369,195.56/x
  3. Step 3: Cross multiply
    623,840.12x = 860,884.98 × 369,195.56
  4. Step 4: Simplify right side
    623,840.12x = 317,834,912,286.69
  5. Step 5: Solve for x
    x = 317,834,912,286.69/623,840.12
  6. Step 6: Final answer
    x = 509,481.36

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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.