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Finding the Fourth Proportional to 704,366.80, 1,057,327.80 and 438,427.60

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Solution

The fourth proportional to 704,366.80, 1,057,327.80 and 438,427.60 is: 658,125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,366.80 : 1,057,327.80 = 438,427.60 : x
  2. Step 2: Convert to fraction form
    704,366.80/1,057,327.80 = 438,427.60/x
  3. Step 3: Cross multiply
    704,366.80x = 1,057,327.80 × 438,427.60
  4. Step 4: Simplify right side
    704,366.80x = 463,561,689,767.28
  5. Step 5: Solve for x
    x = 463,561,689,767.28/704,366.80
  6. Step 6: Final answer
    x = 658,125.41

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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.