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Finding the Fourth Proportional to 469,485.20, 704,227.80 and 137,061.20

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Solution

The fourth proportional to 469,485.20, 704,227.80 and 137,061.20 is: 205,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,485.20 : 704,227.80 = 137,061.20 : x
  2. Step 2: Convert to fraction form
    469,485.20/704,227.80 = 137,061.20/x
  3. Step 3: Cross multiply
    469,485.20x = 704,227.80 × 137,061.20
  4. Step 4: Simplify right side
    469,485.20x = 96,522,307,341.36
  5. Step 5: Solve for x
    x = 96,522,307,341.36/469,485.20
  6. Step 6: Final answer
    x = 205,591.80

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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.