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Finding the Fourth Proportional to 623,438.88, 860,328.36 and 351,504.36

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Solution

The fourth proportional to 623,438.88, 860,328.36 and 351,504.36 is: 485,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,438.88 : 860,328.36 = 351,504.36 : x
  2. Step 2: Convert to fraction form
    623,438.88/860,328.36 = 351,504.36/x
  3. Step 3: Cross multiply
    623,438.88x = 860,328.36 × 351,504.36
  4. Step 4: Simplify right side
    623,438.88x = 302,409,169,571.65
  5. Step 5: Solve for x
    x = 302,409,169,571.65/623,438.88
  6. Step 6: Final answer
    x = 485,066.27

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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.