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Finding the Fourth Proportional to 623,771.40, 860,709.06 and 351,827.40

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Solution

The fourth proportional to 623,771.40, 860,709.06 and 351,827.40 is: 485,467.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,771.40 : 860,709.06 = 351,827.40 : x
  2. Step 2: Convert to fraction form
    623,771.40/860,709.06 = 351,827.40/x
  3. Step 3: Cross multiply
    623,771.40x = 860,709.06 × 351,827.40
  4. Step 4: Simplify right side
    623,771.40x = 302,821,030,736.24
  5. Step 5: Solve for x
    x = 302,821,030,736.24/623,771.40
  6. Step 6: Final answer
    x = 485,467.96

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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.