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Finding the Fourth Proportional to 623,877.91, 860,991.38 and 351,846.55

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Solution

The fourth proportional to 623,877.91, 860,991.38 and 351,846.55 is: 485,570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,877.91 : 860,991.38 = 351,846.55 : x
  2. Step 2: Convert to fraction form
    623,877.91/860,991.38 = 351,846.55/x
  3. Step 3: Cross multiply
    623,877.91x = 860,991.38 × 351,846.55
  4. Step 4: Simplify right side
    623,877.91x = 302,936,848,258.74
  5. Step 5: Solve for x
    x = 302,936,848,258.74/623,877.91
  6. Step 6: Final answer
    x = 485,570.72

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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.