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Finding the Fourth Proportional to 578,403.36, 866,939.76 and 223,261.92

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Solution

The fourth proportional to 578,403.36, 866,939.76 and 223,261.92 is: 334,636.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,403.36 : 866,939.76 = 223,261.92 : x
  2. Step 2: Convert to fraction form
    578,403.36/866,939.76 = 223,261.92/x
  3. Step 3: Cross multiply
    578,403.36x = 866,939.76 × 223,261.92
  4. Step 4: Simplify right side
    578,403.36x = 193,554,635,341.94
  5. Step 5: Solve for x
    x = 193,554,635,341.94/578,403.36
  6. Step 6: Final answer
    x = 334,636.08

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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.