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Finding the Fourth Proportional to 1,247,786.80, 1,872,328.20 and 582,938.80

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Solution

The fourth proportional to 1,247,786.80, 1,872,328.20 and 582,938.80 is: 874,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,786.80 : 1,872,328.20 = 582,938.80 : x
  2. Step 2: Convert to fraction form
    1,247,786.80/1,872,328.20 = 582,938.80/x
  3. Step 3: Cross multiply
    1,247,786.80x = 1,872,328.20 × 582,938.80
  4. Step 4: Simplify right side
    1,247,786.80x = 1,091,452,754,114.16
  5. Step 5: Solve for x
    x = 1,091,452,754,114.16/1,247,786.80
  6. Step 6: Final answer
    x = 874,710.93

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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.