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Finding the Fourth Proportional to 350,705.20, 525,712.20 and 173,239.60

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Solution

The fourth proportional to 350,705.20, 525,712.20 and 173,239.60 is: 259,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,705.20 : 525,712.20 = 173,239.60 : x
  2. Step 2: Convert to fraction form
    350,705.20/525,712.20 = 173,239.60/x
  3. Step 3: Cross multiply
    350,705.20x = 525,712.20 × 173,239.60
  4. Step 4: Simplify right side
    350,705.20x = 91,074,171,243.12
  5. Step 5: Solve for x
    x = 91,074,171,243.12/350,705.20
  6. Step 6: Final answer
    x = 259,688.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.