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Finding the Fourth Proportional to 594,420.90, 820,390.89 and 379,703.98

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Solution

The fourth proportional to 594,420.90, 820,390.89 and 379,703.98 is: 524,049.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    594,420.90 : 820,390.89 = 379,703.98 : x
  2. Step 2: Convert to fraction form
    594,420.90/820,390.89 = 379,703.98/x
  3. Step 3: Cross multiply
    594,420.90x = 820,390.89 × 379,703.98
  4. Step 4: Simplify right side
    594,420.90x = 311,505,686,088.74
  5. Step 5: Solve for x
    x = 311,505,686,088.74/594,420.90
  6. Step 6: Final answer
    x = 524,049.01

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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.