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Finding the Fourth Proportional to 493,711.80, 740,057.40 and 268,596.60

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Solution

The fourth proportional to 493,711.80, 740,057.40 and 268,596.60 is: 402,617.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,711.80 : 740,057.40 = 268,596.60 : x
  2. Step 2: Convert to fraction form
    493,711.80/740,057.40 = 268,596.60/x
  3. Step 3: Cross multiply
    493,711.80x = 740,057.40 × 268,596.60
  4. Step 4: Simplify right side
    493,711.80x = 198,776,901,444.84
  5. Step 5: Solve for x
    x = 198,776,901,444.84/493,711.80
  6. Step 6: Final answer
    x = 402,617.28

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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.