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Finding the Fourth Proportional to 623,668.12, 860,661.78 and 337,188.12

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Solution

The fourth proportional to 623,668.12, 860,661.78 and 337,188.12 is: 465,319.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,668.12 : 860,661.78 = 337,188.12 : x
  2. Step 2: Convert to fraction form
    623,668.12/860,661.78 = 337,188.12/x
  3. Step 3: Cross multiply
    623,668.12x = 860,661.78 × 337,188.12
  4. Step 4: Simplify right side
    623,668.12x = 290,204,927,554.05
  5. Step 5: Solve for x
    x = 290,204,927,554.05/623,668.12
  6. Step 6: Final answer
    x = 465,319.48

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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.