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Finding the Fourth Proportional to 647,563.43, 893,615.40 and 357,186.53

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Solution

The fourth proportional to 647,563.43, 893,615.40 and 357,186.53 is: 492,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,563.43 : 893,615.40 = 357,186.53 : x
  2. Step 2: Convert to fraction form
    647,563.43/893,615.40 = 357,186.53/x
  3. Step 3: Cross multiply
    647,563.43x = 893,615.40 × 357,186.53
  4. Step 4: Simplify right side
    647,563.43x = 319,187,379,412.49
  5. Step 5: Solve for x
    x = 319,187,379,412.49/647,563.43
  6. Step 6: Final answer
    x = 492,905.20

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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.