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Finding the Fourth Proportional to 1,260,828.48, 1,739,872.40 and 717,096.54

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Solution

The fourth proportional to 1,260,828.48, 1,739,872.40 and 717,096.54 is: 989,552.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,828.48 : 1,739,872.40 = 717,096.54 : x
  2. Step 2: Convert to fraction form
    1,260,828.48/1,739,872.40 = 717,096.54/x
  3. Step 3: Cross multiply
    1,260,828.48x = 1,739,872.40 × 717,096.54
  4. Step 4: Simplify right side
    1,260,828.48x = 1,247,656,474,496.01
  5. Step 5: Solve for x
    x = 1,247,656,474,496.01/1,260,828.48
  6. Step 6: Final answer
    x = 989,552.90

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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.