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Finding the Fourth Proportional to 552,011.46, 761,780.03 and 306,999.64

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Solution

The fourth proportional to 552,011.46, 761,780.03 and 306,999.64 is: 423,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,011.46 : 761,780.03 = 306,999.64 : x
  2. Step 2: Convert to fraction form
    552,011.46/761,780.03 = 306,999.64/x
  3. Step 3: Cross multiply
    552,011.46x = 761,780.03 × 306,999.64
  4. Step 4: Simplify right side
    552,011.46x = 233,866,194,969.19
  5. Step 5: Solve for x
    x = 233,866,194,969.19/552,011.46
  6. Step 6: Final answer
    x = 423,661.85

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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.