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Finding the Fourth Proportional to 350,143.70, 525,347.92 and 137,063.90

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Solution

The fourth proportional to 350,143.70, 525,347.92 and 137,063.90 is: 205,647.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,143.70 : 525,347.92 = 137,063.90 : x
  2. Step 2: Convert to fraction form
    350,143.70/525,347.92 = 137,063.90/x
  3. Step 3: Cross multiply
    350,143.70x = 525,347.92 × 137,063.90
  4. Step 4: Simplify right side
    350,143.70x = 72,006,231,802.69
  5. Step 5: Solve for x
    x = 72,006,231,802.69/350,143.70
  6. Step 6: Final answer
    x = 205,647.66

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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.